This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
If you’re on Firefox, you could also set a keyword. I haven’t used one in a while but IIRC you would then just type !u search terms (replacing the u with whatever you configured).
Why not just make it so you search in that as the default instead of typing 14?
I probably should. I have a searXng instance as default, but their results are never as good as udm14, so I got used to just going there.
If you’re on Firefox, you could also set a keyword. I haven’t used one in a while but IIRC you would then just type
!u search terms(replacing the u with whatever you configured).