How long will the effects of the filler last?

I have never had fillers before.
So, out of curiosity, I searched it up and found out that there are many types of fillers, and there is even talk of "domestic fillers."
Can I choose between domestic and foreign fillers as well?
Actually, I still don't even know where I get Botox and where I get fillers ^^;;;
I'm self-conscious about my nasolabial folds, so I'd like to get them injected there... but I'm a bit confused. Anyway, I'm curious to know how effective the filler is.
I'm also curious about things like the duration of a single filler treatment.