Don't use hard tackling unless you want to give lots of freekicks away and get bookings. Hard tackling is for skilled players only
imo, you might want to try easy/normal and you should immediatley see a drastic increase in the tackles you will win.
For a formation like you are playing you might want to not play narrow, just play a normal game as playing narrow limits the space you have to create chances and play in.
Do you use any individual instructions at all?
What tempo are you using? I find direct passing works best with a fast tempo and a mentality the first notch of normal. Also add counter attack on this and it works a treat.
I'm guessing because you are 18th in the league, you might do better playing less attacking to begin with and more on the counter attack, because teams should be coming at you attacking, so it makes sense to try and counter them. This should increase the amount of chances you create.
Do you have all the team close down often? If so this could and its only a could mind, make players be out of position a lot.
Any chance that you can post a few screenshots of the stats of a few games?
What are your players strength? Do you have someone who could hold the ball up, uptop?