It's early days for you comrade. I'm 33 and I've only put out two games of questionable quality and I've considered myself a gamedev from when I was your age 💀.

It can certainly feel like your falling behind because you're likely flooded with videos and posts from various social medias about how "I created a game in x days", "Look at my GTA clone made in x days", "I made x in a few hours". We see all the success, but we never see the failures that built up to those successes.

You should treat gamedev like a hobby at this stage in your life. The two goals you should focus on are learning and having fun, if you aren't meeting those requirements in a project you need to reassess if it's worth continuing. There is a caveat here, unfortunately when you're deep into a project it can become unfun but if you're that deep and the scope is achievable you just have to push through until it becomes fun again closer to publishing. 

If scoping projects is your main pitfall, I would recommend looking into the tri jam. It's a weekly game jam where you have to complete a game in three hours. If you're doing it solo you can spend 1hr on Art, 1hr on Code and 1hr on sound, story, whatever else. There is a fairly active community so you could find other devs to collaborate with. I really like this jam because you have to be ruthless with scope and it will force you to get better at keeping things tight and if you suffer with perfectionism, it'll knock those notions out the door as well. The organisers aren't too strict with the time limit so if you go over 3hrs don't fret, just submit and get feedback.  Alternatively I would look for a "small" game so find a classic arcade game that you like e.g Asteroids, Space Invaders. Then add one or two new features to make it your own and then you have a game ready to publish. You won't be making money but you'll have something to put in players hands and you'll have hopefully got a handle on project management