Keep at it. Like @ladybugheart1998 said, it's also good to look back and see how you've improved. Don't worry about views, likes, and all of that other stuff. It's great to have readership, but never forget that this is your passion. Also, if you feel the need to, take a break. Draw sketches or fan art. That's very helpful.
Checking out photo references, taking pictures, and watching video tutorials definitely helps. Especially if you need to work on anatomy, buildings, etc.
I hope you find the motivation you need. Keep your chin up. You got this. 