you should click on the stats tab during match (i did this same thing even in football manager) in order to see how your team doing in the match.
if you concede more FKs tackle easy (if still get yellowcard then just go tacklehard)
if opponent attack more than you (in shots) then change up the tactic if u start with attack go normal, if still underperforming go defend.
also sub player that's less than 7 or 6 rating in match. even if that player is your best player. sometime he have a day off