As bitcoin investor way you be, nothing give joy reach when you dey in control of your bitcoin, nobody say all this online exchanges no good oh ehh good and there are still established and reliable once out there, but for you to get peace of mind and joy you gat dey in control of your bitcoin, so get a wallet whether software wallet oh, paper wallet oh or hardware wallet oh get one and one of them and be the oga patapata of your bitcoin now wetting dey give joy be that.
You should not care about if the exchange is good, bad, established or new, this should not concern you when it comes to the matter of leaving your Bitcoin on an exchange. This has been said times without number that you should not leave you funds on an exchange.
Even if the exchange is good, sincere they have a huge chance of getting attacks which can be successful and leave your funds very vulnerable.