I use my Nikon D7500 for stuff filmed at the board and I got time. When I dont I have some old Canon video camera but its generally crap. Then I have my old trusty Gopro 3+ black that still work.
The Nikon produces good qual but the autofocus doesnt really exist so its crap to film myself with. I would love to have a new camera that is better but currently I need to make do.
With that said I cannot recommend much more than many cameras internal Mic sucks. External one for 5-10bucks from Ebay do alot.. Though I havent upgraded myself yet.