You admit that you are still a newbie but how come you already know those things? As a newbie you should start on the very basic coin first which was btc and maybe add some ethereum. These two coins should be your main priority before the others. Cex are being used the most compare to dexe's so you will have more success if you will also invest on cex tokens. You already have one there which is bnb.

You can also add token from kuckoin, I think that was called kcs. Houbi and ftx are I think have their own tokens as well, you can grab them too. Never heard of bitget but dodo, yes. Dodo was once a talk of the town but nowadays I rarely see an update with it.