Welcome to Lemmy.
One important thing to point out, your upvotes and downvotes are mostly public here, so if you want to maintain anonymity with your votes you'll want to setup a separate account for voting only and no commenting.
I tried a few apps for interacting with Lemmy and Voyager has been my favorite by far.
I still go back to Reddit for very niche communities that can't be found here, or just don't have the userbase to churn out content like they can. I use an app like "Stealth" to browse any of the subreddits I still frequent, but I've been able to replace a lot of the generic ones with Lemmy communities.
You will find a lot more users here that will take any chance they can get to blame capitalism for all of the worlds problems.
Some opinions are still heavily downvoted here, but you can always join up with an instance that ignores/doesn't display any downvotes.
You will need to be a lot more active in your own communities if you want to turn it into the kind of place you want to keep coming back to.
As far as moderation goes, there are some Lemmy instances that have stricter mods than others. Just do a little research and pick a main one where you won't get banned if you decide to voice your opinion about a dictator one way or another.
Just note, if you pick one that's too small there's a greater risk of them shutting down for one reason or another.