Hey there. I know your EXACT situation..Why? Because that's literally me..My channel does basically the same thing you're talking about. Cosplay/convention related content. I even did the gaming too before deciding to stick to only cosplay/cons. It's a little eerie how similar our situations are. BUT I also didn't have money for an amazing camera and lighting and all that stuff. I ended up getting money to buy a camera and mic before I started doing videos that pointed at me (I did like, 6 unboxings or something before I got the better camera). I went on offerup (an app where you sell your unwanted items), and pawn shops looking for cameras. I found a Canon that was pretty dang good, and it was only $80 from someone on offerup, whereas the camera I bought later that I mentioned, was $500..So you can find great deals that way. And if you aren't comfortable with meeting a seller (similar to craigslist, and we all have those fears), you can always go to pawn shops. They will typically have a section specifically for digital cameras. For a YouTube channel, I'd highly recommend a DSLR, and make sure it has a port for a microphone (in case you don't know, this is a DSLR https://www.google.com/search?q=dslr...w=1280&bih=591
This is just a google search..)
Finding one with a mic port is the real problem. The cheaper older ones won't have them. but it's worth looking at the pawn shops in your area, and stuff just in case. Then you can just get a cheap mic. I use a Bower mic (https://images-na.ssl-images-amazon....pKRK%2Be3L.jpg
) and it works just fine.
Another option, which I also use, is a camcorder. I have the sony vixia hf r700, and it has a mic port. It also records really good video quality. It's $200 new, but used I bet you can get a good deal on it.
One thing you wanna do that I didn't, though, is try to get a camera that has a screen you can pop out and face toward yourself. MUCH easier to know where you are in frame and see if there's any focus issues.
Another great idea, is to watch youtube tutorials on starting a channel. I've never seen one about how to do much of anything with a cosplay/con channel, but the general tips help. You can also find tips on equipment when you're broke. That's where you'll really get some good info right now. One thing I learned is this..Just start. Don't worry about the equipment right now. You have a smartphone? That thing can do better video than many of the older cameras you might find for dirt cheap. Get a little tripod and a phone holder for the top, and boom, that'll be good until you can get a camera/mic. Record in the daytime, facing a window. Boom, good lighting. And for vlogging, get a simple $5 selfie stick at walmart. You can also record tutorials this way. Use the tripod and phone holder, and aim it the same way you would a normal camera. It won't have the BEST audio, but it's better than nothing at all.
I know I probably said a lot of stuff that you won't need to know right now, but I'm sure it's not a bad thing to help anyway lol If you need more help, feel free to PM me. I'm also helping my friend with this same thing so....