For Asian markets I only use Bybit, Binance and Kucoin, but I don't store Solana tokens in all those markets, I store Solana in my personal wallet like phantom or solflare, the Solana tokens I have are used as farmer points on the sactum and meteora platforms.
The exchange you mentioned has a good reputation, binance bybit kucoin. I also use it and so far it is safe. I agree with you that it's best not to store large amounts of coins for a long time, it's best to keep them in a personal wallet. because we don't know the sustainability of these exchanges, but I think so far the three exchanges are safe.
Yes, you are right, and also to avoid the loss of tokens that we have, if we have coins and are deleted by the market then we will lose the coins if we do not immediately withdraw within the time limit set by the market.
If we store our coins in a private wallet, it is more secure as long as we do not interact with the web or connect our wallet to any website.
That's why I've always done that for wallets that are specialized for storing coins that are intended for a long time such as investing in the long term.