A subjective, human based decision will always be that, whether it's in real time or slowed down. Video replays maybe provide more evidence but slowing things down sometimes over exagerates contact. VAR (should) help with the more factual decisions, like ball crossing the line and offsides (within a small degree of tolerance).
Although there are more natural breaks in these sports, football should maybe follow the example in cricket and the NFL, that the coaches / captains should have (say 2) number of VAR appeals per half. Once they are used up, everyone has to abide by the on-field decisions.
IMO this endless checking has destroyed the natural flow of the sport and even with the VAR, we still get outrageous cock-ups.