I don’t like the built-in search either, but I’ve found that the Omnisearch extension works well - been using it for a few years. I pin the “vault search” comma

I don’t like the built-in search either, but I’ve found that the Omnisearch extension works well - been using it for a few years. I pin the “vault search” command to the top of the command palette which, on mobile, is just a down-swipe away.