If you want to give it a shot I would recommend you use Podman Desktop. What I did was I just followed the instructions from the SearXNG page until I had to run it. Afterwards I would just add it to Podman Desktop. Then enter the settings to set a localhost. You can use 8080 in the localhost setting. After that I would just press run and it would start. On firefox or whatever browser you want, now enter localhost:8080 in the search bar and you have your very own searxng

I see you already have an answer using podman.

But don’t be afraid of the command line. If you can copy/paste a few commands, it’s pretty easy to set up.

I honestly find installing docker harder than to start a locally hosted searxng instance.

Also, something like self-hosting your own email is way harder and requires a lot more maintenance. I’d leave that project to further down the line.