Sorry for the slow reply.
Have you been watching BorrasLegend? I basically just copy his tactics.
Honestly, if you watch one just one Youtuber, watch him. No stretching videos to 10 minutes, no shouting, no contradicting himself, no nonsense, just real tips that he actually uses in his top 100 gameplay and which he puts across simply.
Here's my pick of his most effective videos from this year so far. I'd recommend you go to his channel and spend an hour watching them all but I've tried to reduce them to the absolute most important:
The top video in particular will help you break down those 1 depth defences. When you learn those techniques you will be able to hold the ball for longer much easier and frustrate those guys who defend like that, and when gaps appear... bam! Possession play is definitely a viable playstyle, I often have 60%+ and win comfortably.
That fast and furious tactic I used yesterday with my cheap La Liga team when going for an icon swap token against a really good player - I was 2-0 down with 20 minutes left and won 3-2! It doesn't always work but it's amazing when it does.
Stick with it - I much prefer this FIFA to last year's La Croqueta, corner goal, pace is dead bullshit.