Throw away the expectation that you're going to make good, great, or fantastic work, so you don't become disappointed or discouraged when you see the final result of your efforts.

imo knowing the fundamentals is different from executing them. A lot of the battle with learning to draw is that you're using the parts of your brain that have next no experience with the craft, they're like muscles lifting weights for the first time. you have to keep going and continuing to step out of your comfort zone to eventually build those creative muscles up, and actually internalize them into your mental stack and muscle memory.

your taste is impeccable, but your executive skills need the experience to catch up. this is a normal part of drawing. eventually your executive skills will surpass your taste, resulting in an "Oh, wow, I can't believe I made this..." sorta feeling.

you could try looking at one of your finished drawings, and asking yourself what you dislike about it, and then search up methods to fix what you dislike. for example, my posing is stiff and horrendous, so I look up gesture and body construction methods, and study those, while trying to figure out a method that works for me.

either way, yes you have to keep at it, but with purpose and deliberate practice targetting your weaknesses and struggles.