The way I look at it is, the more information is known about you the easier it is for someone or something to predict/manipulate you.

Now sure this can be beneficial to you if that someone/something is a looking out for your best interest or at least is looking for a mutual benefit solution. However the vast majority of the online world isn't looking out for your best interest they just want your time and your money.

Because of this try and keep private. I do my best to block ads and trackers and just be careful about where I am giving out my real information. I think this has helped me avoid buying crap I really don't need and helping avoid scams as is hard to fall for a scam when they think your Name is Tommy Baker living at a Walmart address in California.

Being private I feel will also help you with social media addition. I spend less time on YouTube/Reddit/Lemmy or wherever if I am not logged in vs if I am logged in. Simply because my accounts are very personalized to me thus it does a better job suggesting content I would be interested in looking at. (Sucking up my time)