Vortex works great. In general, you’ll want to use some kind of mod manager and in the Skyrim realm, the main alternative to Vortex is Mod Organizer 2. I have heard that there are some exceptionally fiddly setups for which Mod Organizer is the better choice, but Vortex is a very good one. Much better than the old Nexus Mod Manager.

Installing them yourself is basically irreversible, and things can get complicated if you don’t have a mod manager keeping track of stuff.