Tactics
Firstly, and probably most importantly is the tactic I use.
The tactic can be found here:
Choppers 4-1-2-2-1 tactic
It's Version 3 of this tactic that you want and it can be found at the bottom of the second page. This tactic is very balanced so don't expect loads of full on attacking football but what it does mean is that because it's a balanced tactic you don't need to tweak from game to game. Saying that I have developed a defensive version of this tactic to be used in some of the harder away games I'm now having in the Championship. I'll be uploading this tonight when I get home from work if you feel you need it. However, in the lower leagues I find that just using V3 is good enough.
Players
If you find the tactic is not working for you then it's almost definitely down to the players you're using (particularly if you're also following all of the other things I do which we'll go into later). This has definitely been the case for me. As I managed to get better players my results improved dramatically.
But this is not always easy in the lower leagues and after a few seasons of struggling to find even a half decent player I stumbled upon something that helped me get promoted the next three seasons in a row. And that was not to listen to my assistant in regards to what players would be interested in coming to my team on loan. When asked to filter out unrealistic targets he gave me a list of absolutely useless players, all worth less than £90k. In the end I got fed up and just listed all the players listed for loan that were valued at £1m or less. I then literally made offers to loan all of them (or only the good ones once their values got down to less than £400k). What I found was that the majority of these players will say they're not interested but some will come to you, particularly players from teams close by, so in my case Sunderland, Newcastle etc.
Now, if you're playing in England the rules are that you can have 4 long term loans per season. So if you're lucky you should get 4 players that are better than the players you already have agreeing to come on loan to you. If you're very lucky then you might get 5 or 6 of these players agreeing and you can choose your the best 4. To ensure that you don't just take the first 4 that agree just to find out that two better players have agreed to come on loan to you but are no longer allowed as you've used up your allocation, delay any that you're not 100% convinced about for a week until you know if those better players are going to agree to come to you or not.
You then have the option to bring in some short term loans. In England you can have 5 loan players in the match day squad so I always try to bring a couple more players in on 3 month loans. When their 3 months are up you can't extend them as there's a rule that you can only have youngsters on short term loans for 3 months at the most. So once those two players are coming up to the end of their loan deals I try and find two more. By doinf this I try to ensure I always have 6 loan players at my club, 5 which I can always play and 1 for cover. I've found this to work brilliantly as the players you can manage to bring in on loan are usually always better than your useless lower league players. It takes a while to make loan offers for so many players but it's definitely been worth it.
Another tip is to never offer 100% wages to try and keep your outgoings to a minimum. Offer 60% at the most at first, if the loan offer is refused then up it if the player's worth it. Not wasting money is massively important at lower league level, more about that later.
The other thing you need to spend time doing is trawl through the free transfers. At lower league level you only need to concentrate on certain attributes for each position. As there are going to be a lot of free players to trawl through it's much better to sort the decent from the dire in some way. If you have attribute masking enabled this will involve scouting as many free players as possible to reveal all their attributes befor taking the next step.
Once you've done enough scouting of free players (or you never had their attributes masked in the first place) then it's time to start looking for the kind of players that will give maximum benefit to the team. The first thing I'd do is to filter all free players that have pace and acceleration of 15 and above. Pace is massively important at lower league level and if you can get a pacy striker and 2 pacey wingers then it will make a big difference.
Next filter by tackling of 14 or more to see if there's any decent free defenders or defensive midfielders out there. At this stage the standard of player that you'll actually be able to sign will be very low so it's mainly just a case of trying to get a few players that are better than the ones in your current squad at this stage. The main thing is to try and get some pace throughout the team, the loan players you hopefully manage to bring in will be the most important ones.
*Disclaimer 2 - This method is not entirely in keeping with the strict rules used in the LLM forum. But if you do want to keep to those rules you just need to only rely on players found by your scouts etc and try and stay away from the player search screen. I however don't strictly follow the LLM rules as I find I don't enjoy it as much. Each to their own.