In Firefox:
Add ^ to show only matches in your browsing history. Add * to show only matches in your bookmarks. Add + to show only matches in bookmarks you've tagged. Add % to show only matches in your currently open tabs. Add # to show only matches where your terms are part of a tag or title. Add $ to show only matches where your terms are part of the address. Add ? to show only search suggestions.
Armed with this, and &UDM=14 on my browser's Google Search, I use Google a couple times a day to find new things and without the AI slop, product ads, and other nonsense. That doesn't fix the shitty results themselves, but with a little bit of -quora and -reddit I can usually get what I'm after in the first 5-10 links.
Stop feeding that monster. Cut your usage. Find other tools that accomplish your goals (often faster and cheaper too) and then use Google for what it's good for, the occasional web search. With uBlock Origin and &udm=14 Google web search still beats Bing or Kagi or any of the Bing-based products like DDG.
Google Search sucking is only really an end user problem if you depend on it for a lot. If you only need to touch it a dozen times a week for a total of 5 minutes, it's not too terrible.