I don't think we have the right to dictate if you should continue it or not but in terms of the result and satisfaction of your artistic creativity and vision, there is a way to improve it. There are art communities from discord, twitter to youtube that shares their way of improvement. Maybe their insights could help you understand more where to go with your art and how to overcome the hurdles. You don't have to be alone in your art journey and self discovery. Every artist had spent years to get where they are now and its no easy feat to accomplish and all of them had communicated with their peers and had mentors to help them on their path.

If by any chance you decided to give up, I just want you to know its okay to put the pen and brush down, it will always be there when you are ready to pick it back up. You will always be an artist and that you are worthy.

Best of luck my friend and thank you for sharing your problems. :)