Juan,
I'm happy you keep trying to quit. It is clear that you know life is better as a non-smoker.
Still, those first few hours and days are really tough. Once you make it through them, things slowly get better. With time, a lot better.
Do yourself a favor. Commit to never taking another puff (NOPE) and, if you are struggling and tempted to light up, reach out here first and post an SOS.
You can do this. It is tough early on but quitting is very doable.
The long term rewards to a smoke free life are worth the early struggles. You just have to commit to NOPE.