What a lazy response... No, I wasn't around but even if you care to read on the offside rule official Wikipedia page, there's plenty of food for thought.
As for VAR, I'm sure you'd like to have more wrong calls than we're seeing now. Especially when it comes to offsides and handball, VAR has improved quality of refereeing decisions massively. Most of the times VAR interferes, it's the right call, objectively. When there is a subjective matter is where it is messy. Hopefully the rules will adapt and make it better. There are already several proposals that FIFA are evaluating (you could also read more about that if you wanted and were able to use Google) and there is no doubt in my mind they will sort it out with time and experience.
The clubs and nations will demand it because of the high stakes involved. Sponsors and broadcasters will demand it for the reputation involved.
It's only backward people who don't like where they and their lives are heading, that try and cling to the past, who have a problem with that. History is a timeline of change. Always has been and always will be.