Yes, given the present state of mass surveillance, tracking, data collection and sharing, it is nearly impossible to avoid use the internet in a private way. But rather than give up entirely I choose to reduce my digital fingerprint where I can. That way if nothing else I can say, even if only to myself, whatever information was gathered was done without my consent.
My current configuration is Mullvad browser, VPN, and Little Snitch along with a security suite for live virus scanning. If I want to watch a YT video I drop the YT link into the DuckDuckGo browser where I have Duck Player defaulted so I can watch the video w/o ads, suggestions, and all the other unnecessary stuff YT adds to their videos.
I also have well over 100 email addresses, one for each online entity I have a relationship with. If the entity suffers a breach I simply change the email address I have for that entity and discard the old one. And if I receive spam on one of those email addresses, I know exactly which entity to contact about it. In one case, my doing that led them to discovering some bad code that was broadcasting email to the wrong people. In another case the entity had shared my email address with a marketing firm and I started receiving spam. I tore the entity a new one, discarded the email address an never heard from either the entity nor the marketing firm again. Had I used a single email address I wouldn't have even known who I got the spam from.
I am also providing misinformation where I can. Age, gender race, religious affiliation, income, work experience and so on I gladly fill in with anything but the correct information. If I someday receive a solicitation targeting a 24 year old descendant of the Inca Empire living in Botswana with a degree in lead typesetting and making $230K a year, you won't be able to wipe the smile off my face.