Man come on, that is really fucking sad. You need to start moving. Just start by doing some jumping jacks in your room. Do a set of 25, rest for 30 seconds, then do another set of 25. That's it. Then you can sit back down and go back to your screen. Then tomorrow, do it again but add in a third set. Or a set of pushups instead. Then the next day, add in a set of situps. Just do whatever body weight exercises you can think of. Get to the point where you're doing a 10 minute workout every day. Not an hour, not even 30 mins. Just 10 fucking minutes. Eventually you'll start wanting to do more. That's how you build momentum from nothing and start getting your shit back together.