Reddit is owned and controlled by a corporation (Condé Nast.) They disabled 3rd party Reddit apps to force people onto the official Reddit app which also broke many third party moderation tools. This disproportionately impacted power users, frequent posters, and mods-- in other words, the people who made Reddit the important community it was.
They showed an unwillingness to listen to their community or work with the unpaid volunteer moderators, instead banning the moderators who took part in the Reddit Blackout and replacing them with mods willing to cooperate with the enshittification of the site.
They've been mangling the web interface to be uglier and less usable (old.reddit.com is still up, but the mobile version of old.reddit.com is gone). They've been experimenting with ways to show more ads and subtler ads.
Lemmy is open source and federated so it can't get bought up by a company and cored out for shareholder value. You can use different instances, or a variety of apps. You can use (or create your own) third party tools for accessibility and moderation.
Lemmy is currently a smaller universe than Reddit was, but it has a high ratio of good posters and moderators who care personally about their own communities, so hopefully it continues to grow.
"You're" is a contraction of the phrase "You are." The possessive form of the second person pronoun is "Your." No apostrophe, no letter E. "Your choice."