First was pretty enjoyable. Second I could make excuses for. Third bored me to death. Never saw endgame and still have no desire to. This... outside chance it could be something enjoyable but I am most certainly not betting on it.
Nobody can make excuses for the second one.
This one was written and directed by Taka Waititi like the third one, so expect more of the same.
But it will have Christian Bale as the villain, so that could be fun.
People hate on it probably because it was a whole lot of nothing. Flat characters, flat villains, straightforward plot, nothing memorable, some people got fridged to no great impact, the movie feels like one big filler episode in the continuity. The first one was surprisingly fun considering the budget of $100 and a hitherto unknown actor playing Thor, the third one was Waititi's extravaganza, for better or for worse, but the second one was just... eh?