Reddit mentions of LimoStudio 4PCS Photography Studio 65 Watt Fluorescent Photo Light Bulb Daylight, AGG872

Nothing at all wrong with mirrorless, as a matter of fact if you do decide to go camera shopping in the $500-$1500 range with a focus on video, you're mostly going to find people recommending mirrorless cameras. For example, I don't love Canon cameras in that range generally, but the M50 is a very nice camera for the price, has a flippy screen, great AF, and uses the same lenses as your current camera, so if you have a collection of glass already you wouldn't have to buy into a whole new system. This would also allow you to do cool A/B camera setups.

The lack of flippy screen does make getting focus harder. You could always put something in the exact spot you'd be standing, focus on that, hit record, and then go back to that spot. It's awkward, but it works. Generally speaking you'll probably want to shoot for a "flatter" image if you're shooting solo, meaning you'll want to close the aperture a little bit to increase the area that your camera can focus on. You'll lose some of that nice distinction between the in focus subject and the out of focus surroundings, but it makes it less likely for you to miss focus.

I will say, though, be careful about going down the rabbit hole of "I need new gear to make good videos." Before you know it you've spent thousands on new cameras and lenses, when really all you needed to do was light your scenes a little better and deal with the shortcomings of your current camera (there are ALWAYS shortcomings). Same with audio. A cheap but decent enough mic with some time in Audition or Audacity in post can produce very solid audio. There are times and places for the really really expensive stuff, but when you're a hobbyist it usually just isn't worth the cash.

With lights, shooting in doors will almost always land you with orange looking footage unless you change your lighting and double check your white balance settings. Unless you're going for a specific look, you usually want lights that are either 5500K-6500K. Something like this.

Now, those kinds of lights will feel insanely bright, and if it's all hitting one spot it will be too harsh, so you'll want either some diffusion fabric in front of it, light umbrellas, or soft boxes. Use the three point lighting system as your general guide, and adjust for style. Usually you'll want the lights as close to the subject as possible without being on screen.

Another tip, if you're going to to color work in post, is to try to keep the WB settings the same, as long as you're in the same location at the same time. So don't adjust your white balance, shoot for 20 minutes, and then re do your light balance because you think you didn't have the settings exactly right. This effectively doubles the amount of work you have to do correcting color in post, as you'll have to change your color work after you changed your WB settings. Better to be a little off in camera but be consistent. This is also why you don't want to use auto white balance, or at least one that changes all the time. If the colors of your image are changing constantly, correcting those colors in post is a losing battle.

Anyway, keep having fun with it! Hopefully some of that was helpful.