Sounds like as your history grows it gets harder to sort through. I dont want to suggest bookmarks because I feel like I always do, but....

I never delete my browsing history, but then, my home drive is encrypted and my screen lock is pretty short - and I usually trigger it by throwing my mouse to the top-left corner which immediately activates the screen lock. If someone is skilled and dedicated enough to get past all of that, I'm probably compromised in a half dozen other ways anyway.

I have been contemplating having every site I visit automatically indexed by buku, and using that as my primary search engine, with a fall-back to Ecosia. Like you, my search history is a better source of 60/70% of my search needs.

That is a cool idea you know, all you'd need is a tool to preview sites in a half size page with the list on the other half of the page and then you just tap the selected sites you want with a multi select option that let's you highlight them in bulk so you can export them into a bookmark collection, then set up a freshly installed web browser with only those specific bookmarks, cooler still then would be a way to pin those bookmarks a single page or multiple pages with a thumbnail represent to represent each bookmarked page in your browser window and you then just choose from them like a UI (User Interface):with tiled thumbnails for the sites to choose from amd or web linked content and servers.