Better always consider the exchanges who are always accurate in the market in terms Deposits, Withdrawal, and Support Systems.
If that's your base requirement (which in normal times is a very decent indicator), then you can write off basically all top tier exchanges. All exchanges suffer from issues concerning deposits, withdrawals, verification taking ages to be approved, etc. One thing they have all in common, is that they suck big time in terms of their support. If it was just one exchange not being able to catch up properly, then you could blame it for being incompetent, but it's the entire economical ecosystem badly struggling to move forward. In other words, this economical ecosystem is
not ready to deal with this many users. For that reason it's perfectly understandable that the entire crypto market has taken a few large steps back in terms of its price. If you want to be valued high, you should reflect that, and in case you can't reflect that, it won't be sustainable and the market corrects, which happened.