As long as you aren’t making jokes that mock other people (especially minorities who are already fucked by society), don’t worry about it. You need to focus on you and what you want to put out.
Dark humor isn’t for everyone, and that doesn’t mean someone blocks you because they have a problem with you. They just don’t want to see that kind of content. Self-tuning your internet experience is vital on this day and age, so don’t take it personally: It’s about what kind of experience they want, not about you.
For example, you said you make jokes about you dying/depression, right? My boyfriend would probably block you because it’s triggering for him, based on his own experiences with depression. This block wouldn’t be him saying “this content is terrible, it shouldn’t exist and no one should see it”, it would be him saying “this isn’t good for me, so I’d like not to see it”