One thing I try to do is increase the amount of content I view because I explicitly requested it instead of what was being suggested to me. "Pull" instead of "Push". I don't ever log into youtube. I also have their related/recommended videos disabled, and I never see their homepage/trending stuff. They'll still put whatever random stuff they want you see in search results (usually pretty far down at least) and ultimately an algorithm determines what kinds of videos are included in any set of search results, but I do think it helps both to avoid being fed most of what they're pushing on people and (to some extent) limit the amount of time spent just mindlessly viewing youtube.
Same with streaming services, I'll skip over whatever their major ads are pushing at me (for example, the large banners at the top of the screen when you sign in, the "featured" category, etc.) and I won't be satisfied with whatever they decide to show you (repeatedly) in whatever random categories the algorithm presents to me that day. I use the search function a lot there too, often just entering "random" strings of 3-4 characters and seeing what comes back as I keep scrolling down.
Like with youtube, you can tell that when they're pushing something hard enough they'll just insert that stuff into the results of any search you enter, but I'm often surprised to find a lot of things I want to see that the streaming service had never shown me before that way. I'm disappointed that HBO Max decided to abandon their simple A-Z listing of everything they had in order to encourage people to depend only on their algorithm.
The more I can eliminate or avoid things being pushed at me and decide for myself what content to consume the more variety I see, but at a certain level you're always left with whatever people are willing to show/sell you which is frustrating. Exploration and recommendations from actual humans are more fun anyway.
For news and other topics I want information on I try to look at stuff from multiple sources and perspectives to avoid the filter bubble problem and to get an idea of what people who'd disagree with me are thinking or understanding about a topic. I find that when I'm reading content from people/perspectives I strongly disagree with I automatically read what they're saying very critically and that practice carries over so that I can't help but do it even when I'm reading things from people/sources I personally trust generally. Terrible arguments, bad facts, and attempts to mislead are pretty common everywhere and this does make me a lot less confident in what I "know", but that's probably a good thing.