Unable to score more goals as compaired to other teams in the league

[SimplySimon]

My F2P team plays this formation, with red arrows on the AMC and the DMR/L, normal mentality, own half pressing, mixed passing, normal tackling. You can switch between flank and central attacks depending on the opposition formation, e.g. If they have DMC, go wide

You can play defensive against better teams and force counters, but everyone here has told you the right thing - you must be more attacking against weaker teams if you want to score more goals

Use some common sense

Same with the pressing. It should be obvious that ultra defensive and full pitch pressing are opposing tactics (they mean 'players sit deep behind the ball, encouraging the opposition to come forward' and 'put early pressure on the opposition to win the ball back and attack quickly' respectively)

You could try full pitch pressing with attacking mentality, and own half with defensive. I just press in my own half because players don't tire as quickly

And please, read the guides - there is plenty of help available to you there from experienced players