I basically want to start a ssh client on kindle to use as a display for my laptop/steamdeck (via tmux ofc)
Does that work for you? I thought that's what a fuzzy finder is
If I wanted all occurrences of lines that match a pattern I'd use vim-grepper (which uses Ag or ripgrep under the hood) and search with a regex.
If you're using Telescope you can use your fuzzy search to find the lines you want then use <C-q> to send them to your quickfix list.
Could you maybe provide an example with figures?
Thanks