Sorry, but I have zero sympathy. For years players, managers, pundits, supporters, and just about everyone, have been bemoaning refereeing decisions and demanding technology. Now they have it and don't like that it is ruling out goals or making decisions that go against their team, well tough, you asked for it and now it is here.
It isn't going anywhere so people just need to get used to it. Changes are definitely needed in terms of how it is used, but they can't do that mid season as that would lead to decisions inconsistent with those already made. We need to remember it is the first season and we are behind other countries like Australia and USA who have been using it for longer, these things will take time to get right. We also need to remember that it was the clubs that said they don't want pitch side monitors used, and that was seemingly backed up at a managers and PGMOL meeting last month, although some such as Wilder seem to be backing away from that now.
In terms of offsides, I'm struggling to see a better way of ruling on it without actually changing the offside law. There is no clear and obvious with this, you are on or off and I can't see where they would draw the line if not taking the black and white approach. I fully suspect that if they did apply clear and obvious to it you'd then get managers coming out and attacking decisions to award goals against them, after all we've seen them complain in the past when a player has been fractionally offside and in some cases not offside at all.