Hello ! So, I got a long list of games that I spent times thinking about on a gamedesign and storytelling point of view, but have absolutely no expecience in actually making some. Here's my question... How to learn, making games? What would you be your advices? What would be your advices, if you're a veteran at it? How did you started yourselves? Is there some traps to avoid? 

Thanks in advance, hoping I didn't messed up by posting in the wrong channel ^^"

Nah, it's okay to post in either category, this one is just more specific. To answer your question: it depends on where you are now and where you want to go. What kind of games? Do you already write, or make art? Can you code?

Thanks !
So, everything art related is clearly not in my skills. I'm terrible at producing any graphics. 
My forte would clearly be in scenario making, and game design. I write with ease, am an avid and heavy player and game master on a bunch of TTRPG, with a preference for dystopians and grims universes.

For what is of coding, I got initiating to Python, but quickly realized it wasn't purposed for game, and that's it. I need to learn a langage that would be adapted. 
Kind of game could be a bit of everything, really. I can see how to adapt my writing skills to a couple of style. Although I suppose written RPG on the "your own hero's journey" vibe would be the easier to adapt to a mostly text-based game. 

Have you considered RPG Maker? I haven't tried it myself, but it looks like you don't need programming to make a game with it as long as you are not trying to deviate from a standard JRPG, and the art style is kind of uniform so you shouldn't have much trouble finding tilesets that fit together. That leaves just the map building and the story - which, from what you describe, are things you should be able to do yourself.

You will need to learn JavaScript if you want to implement your own gameplay mechanics in it though.