If VAR is going to work in its current form, the offside rule especially needs to go through some changes.
The problem doesn't really lay at VAR's feet, they only try to judge the offside rule as accurate as possible, though I think hiw accurate their drawings is questionable.
Would be better if they changed the rule to only offside if the attacker is clearly drawing attention from being ahead of the line. I guess it then become a debate of opinion again which they want as little of as possible, but one things for sure, an armpit offside is no advantage at all.