Hi Naji, if games are something you are passionate about, than don't give up just because of some bad experience. Take it on and grow from it. Keep thinking of how to improve your games. As Kyatric mentioned, you are still young. You will gain lots of experience from this and it will help you.
Haha I won't partake in the pro vs hobbyists debate! I absolutely won't!!
There is one piece of advice I will offer. Build games that others would want to play, not what you would want to play. This is the general rule for any successful business. This is something that you will gain with experience. So hang in there!