Actually, I just got a new MoYu Aolong. (My picture lol)Ok, that is great!
What cube are you using? If you have something old, like a Zhanchi getting a new GOOD cube can get you sub 20 in a few hours/days. You probably need one anyway.
A great spot to start learning and improving is CubeSkills.com I would start with the Intermediate F2L and Cross: https://www.cubeskills.com/categories/3x3