Confused on what fediverse apps to use

I have recently started using fediverse apps, mostly lemmy and mastodon. So far Lemmy is the only one I use the most and kind of understand.

On mastodon, i mostly follow news accounts (likely bots). Toots in my feed rarely have any comments.

I have been using matrix for messaging long before i have started using other apps in the fediverse.

A few days ago I learned about Misskey and Calckey (idk the difference between them) and would like to try those out, but I'm kind of feeling overwhelmed by all these different apps different instances and whatnot.

Also i get the impression that there is this issue where some posts in one app is displayed very differently in another app.

So is there a way to use any one of these apps (Calckey or misskey for example) and get all my social needs done (including messaging) ?

I apologize, if I'm not being clear.