There are many exchanges in the world crypto currency market but all are not legit i think. Some exchanges get more popularity among them one Binance Exchange. I prefer to use this exchange.
What do you mean the exchange is not legit? do you mean scam?
There are so many legit and scam exchanges, it doesn't mean that the unpopular exchanges are scam exchanges.
Like STEX, STEX does not have high popularity, and based on liquidity at coingecko the trust score is only 5, and do you think STEX is one of the scam exchanges?
I have been trading there for more than two years, and I have never experienced any problems there even though trading above 2 BTC.