Everyone lamenting this needs to check out neocities, or even get into publishing your own website. Even if it's on a "big evil" service like GoDaddy or AWS, whatever. As long as it's easy for you. Or learn to self host a site. The internet infrastructure itself is the same, but now we have faster speeds, which means your personal sites can be bigger and less optimized (easier for novices and amateurs to create). People still run webrings, people still have affiliate buttons, there's other ways to find things than search engines, and there's other search engines than the big ones anyways.
There are active communities out there that are keeping a lot of the old Internet alive, while also pushing it forward in new ways. A lot of neocities sites are very progressive. If you have an itch for discussion, then publish pages on your website in response to other people's writings, link them, sign their guestbook.
Email still exists. I have a personal protonmail that I use only for actually writing back and forth to people, I don't sign up for services with it aside from fediverse ones. People do still run phpbb style forums, too. You'll find some if you poke around the small web enough.
A lot of these things are not lost or dead. They just aren't the default Internet experience, they're hard to find by accident. But they are out there! And it's very inspiring and comforting.