To me its simple. VAR is not like for example tennis where a ball can be clearly in or out.

Take a leaf from cricket - offside is a bit judgemental, not fixed lines to see. So is LBW judgemental. So in cases where there is a degree of doubt, used "referee's call". Make the linesmen and ref make decisions to be judged. Don't just sit back and cop out of decision making, make the officials do their jobs, give them the benefit of the doubt and only overturn if it is hopelessly wrong