This from my own experience, maybe not same for another player

I never play with Attacking mentality, even my team quality > oppo, normal all the way

Flank focus only if I play with AML/R formation, otherwise I use mix, even I use 442 ND, mix focus work better if you put red arrow on DL/R coz they score a lot, this I already prove it last season while use 442 ND, I put red on DL/R + use mix focus

Attack mentality + high press + hard tackling only if I want try push goal, I don't care oppo quality lower or higher than my team.

If I put blue arrow on DC, oppo total shot number increase, this also same situation for my team, more total shot if oppo put blue on their DC.
For this situation, I already prove it coz I ask my real life friend do Friendly with same formation + player, only make change on blue arrow on DC.

Now I use this formation, 3W-3DMC-MC-2W-ST, look strange but so far so good, no arrow, flank, rest default.