Best fighting sport/martial art

What is it, Veeky Forums?

Clearly Sambo

Look at all the places near enough to you that you'd be willing to go.
Filter out the bullshido
Of the remaining places find the one with the best teacher than you interact well with.
Thats the best style (for you).

depends on the situation.

if you're a bjj black belt and you have multiple attackers then you're fucked. a striking art is better suited for such a situation.

do both disciplines in some form or fashion. good endurance/stamina will get you far in a fight as well, assuming you have basic defensive techniques down.

How long do you need to see what an martial art has to offer?
I was thinking of picking up some, and figured maybe I'd try like 3 at the same time for a month, and then just drop whatever I don't like.
Is a single month enough to make up your mind about a martial art?

...

BTW, I think I'm gonna start Muay Thai, seems like the obvious choice given that I fapped to futa all the time before going noporn.

Yeah, 1 month is enough depending on how frequent you attend classes.

Always keep in mind on what reason you're training martial arts in the first place so you can choose what is more up your alley. (ex. competitive, self-defense, general fitness/as a hobby)

Striking = Boxing and Muay Thai

Grappling = Bjj and Judo

Mma = great all round combo

Alot of mma fighters do all of the above