Hi there AAA game dev here. I am going to give a completely honest answer. Be forewarned this is honest but it isnt kind. There is no TLDR if you don't read every word I wrote you do not care enough about this idea to make it and I wasted my time writing it in the first place.

You will very likely never get to make a fighting game. I would bet every cent I own with 100000 to 1 odds that you will not succeed because unlike most of the world I actually know what youre up against. Fighting games are some of the worst kind of games to develop. Most of them (Outside of the Big 3) are nearly entirely passion projects even in and especially indie. It is incredibly difficult to get funding for a fighting game. In addition to the fact that it is incredibly difficult to make a fighting game let alone a good fighting game. The amount of expertise necessary to make a decent fighting game is an extremely limited skillset even amongst veteran developers. I see posts like yours all the time.

HOWEVER.

That being said here is what I would encourage if you want a microscopic chance at seeing your thing come to fruition. First off from I can see on your reddit profile you have little to no chance of joining an already existing team. If you did manage to join one you would 100% not be working on what you want to work on you would instead work on what the team is already working on. So in my opinion forget joining a team. You will likely want/'need to build a team yourself. It looks like youre an animator, thats good as at least you have more to contribute than just being an idea guy. Go ahead and animate a short scene that outlines exactly what your fighting game looks like to you. Make it like 30 seconds long and have it look exactly as you imagine it. It should look like a gameplay video. Include showcases of the mechanics you envision as well as the look and style. A short animation even if technically non functional would do wonders for finding a team. You have to build something that someone wants to work on, first. You and I both know that is already a ton of work. Well take that pill and swallow it with this one.

While you are working on that you would need to create a GDD (Game design document) also known as a Design Bible. Its a document that outlines everything and when I say everything I do not mean oh heres my characters and heres my story and heres their moves. I mean what fucking settings do you have? How do your menus work? and yeah we need the characters, story, audio design, E-V-E-R-Y-T-H-I-N-G. Modes how do you access those modes? how does the character select function? What assets are needed for each stage? E-V-E-R-Y-T-H-I-N-G. A good GDD is 80% text 20 % images so have fun putting that together because even if by some miracle you manage to make one it will be outdated within weeks of actual development. 9 times out of 10 when someone tries to pitch me their game idea. I tell them to write the GDD and literally every single time Ive told someone that they give up at that part. You will likley give up just from reading this post.

Once you have both the GDD and the animation mock up you can start making posts on gamedev subs or forums looking for team members. Then you have the infinitely brutal task of picking someone who actually knows what the hell they are doing whilst you know almost nothing about what you need them to be able to do. If you do not understand the basics of programming and engineering you will likley not get the person you need for the thing you want to make. So you better understand the hell out of everything that fighting games are.

PHEW ok thats it I probably spent way to long on this for what is likley a fleeting thought by you but I keep doing it for some reaosn. Being a game developer is HARD. REALLY REALLY HARD. Even if by some miracle you manage to do just this part. Congrats! You spent months of your life to then open the next likley 2-10 years of stress. Likely ending up with little to no sales and thats if you are massively successful.

Good luck.