If you wish to hold some coin then use exchange only for during exchange. Just exchange your coin and transfer on your personal wallet that you have controlled. Specially you can use hardware wallet.
Because many exchange hacked buy hacker. Many people loss their capital by hack.
So please don't hold your coin on exchange for long time.
I think you should not hold any long-term coin at this point, can see that the market is continuing its bear market as bitcoin prices are constantly falling throughout the days. The dramatic fall in bitcoin prices has led to a sharp drop in altcoin prices, and according to my analysis, bitcoin prices may continue to fall sharply in the coming days so you should not keep any coins at the time this.