I Can't change server's software version

I'm trying to create a small server but I can't figure out how to change the server's version. By default it is set on PAPERMC 1.13.2 and I wanna go to Vanilla 1.13.2.

Any way I can do this? Any advantage keeping Paper over Vanilla? And lastly, can I install server plugins in Vanilla? (Like /Plot, /Home, /Spawn, etc.)

Thanks in advance.

Many thanks for your response. Also, I have one more question. Everyone has to get the same version in order to play the server or only me in order to host it?