I do not hold funds on exchanges, it is not safe at all. Exchange can be hacked, your account can be suspended/blocked/frozen. I hold on the wallets with full control of private keys, mnemonic phrases, etc. I use exchanges only to sell/buy/convert some assets and withdraw it immediately.
Holding on exchanges isn't safe for long time, just like the experience I had before after withdrawal of my tokens the site immediately closed their trading. I remembered cryptopia last 2018, their situation went so bad after hacking of their funds occured drastically. Fortunately, I was able to pull out my holdings and trasfer it on the safe wallet that's I intended for my asset only.