The front page is just VetOfTheSeas and everybody else lol.

Huh? I've been using Lemmy natively (i.e., no 3rd-party front-end or app) since the Reddit API fiasco (what's that, a couple of years?) and have never heard of this user. My instance is one of the most widely federated too. I just searched for them and noticed that they've posted a lot in the last 3 days, but it's not that many posts so it shouldn't be dominating your feed. What are your feed settings? I suggest trying hot, active, or top [whichever time frame you prefer] and all, unless you subscribe to a lot of communities, in which case you can select subscribed instead of all. Once you find a combination of scope and sort type that you like, you can set that as the default in your account settings.

In order to block stuff you don't want to see when you browse all, block any communities that focus on that stuff. For example, I block the vast majority of meme communities. It seems that Lemmy having too many memes is a common complaint, but I barely ever see any, even browsing all.