Don't receive funds in exchanges from random people, and don't store your funds there. The account would freeze at any time for any reason.
Receving from random people is not the only problem as you should be careful who are you sending your money to.
Last year Binance froze my withdrawals for no reason at all and to prove that I am the owner of the account they pulled out one withdreawal I made like 2 years ago, satrted asking bunch if questions etc. Luckily, that withdrawal was done to my irl friend and I had all the proofs they needed but I can imagine things getting way more complicated if I was paying someone for some dodgy service.