Last year I made over 5000 kilometers.

That's crazy - congrats! Mine must be much, much smaller overall but I might try to calculate it.

Do you already have a plan on how to achieve that? The idea is easy... burn more than you consume

Yep. It's been annoying. Gaining muscle is so much easier. I lost 3kg pretty quickly in the first couple of weeks, but as of yesterday I gained it all back, even though I only had a single meal on one day that took me over my calorie deficit. Not even sure how it's physically possible; either I'm storing a ton of water or I'm just counting calories off by about 600 per day... Sigh.

Never give up! My main advantage is I'm not a big foodie. I can forget to eat for an entire day if I'm not careful!