Requested feature overview description.
you can add tags pretty easily to search under the trending tags, there should be more easy one mouse-click things like that for things like ordering by score and date etc. and also put an enter button on the search bar you can click with the mouse
Why would it be useful? i have only one hand free for the mouse... guess why lol
What part(s) of the site page(s) are affected? probably all

A convenient suggestion, however a simple solution would be to just use that free hand for clicking AND typing, y’know?
Obviously not at the same time, but with some getting used to, I’ve found it quite easy to switch between the two.