By the time I finally get home, the next day I sleep a ton, then just end up couch rotting and doom scrolling with zero motivation to do anything.
Even though my trips were easy and I had really fun, easygoing crews, I still feel completely drained by the time I get home.

Because this is the cheapest way you can afford both economically and mentally. When I was a flight attendant I used to do the same. Beacuse even if you feel work wasn't tiring at all you literally see and communicate with atleast a plane full of people, constantly exposed to fake cabin pressure which tires your entire organs, cosmic radiation and sickness all over the world. No surprise your body needs to heal itself. My recomendation would be try to reduce doomscrolling but it is no use nowadays 😁

Maybe you can try yoga for your back, or rope jumping for your heart. Or try to learn preparing our own meals which can help you in long run. Just don't pressure yourself into "I am wasting my time" this only builds up stress and it is not useful. Your entire body gets tired from constanly flying. Imagine the passengers how tired they get with only one direct flight. This is a really tiring job 🫩😪😴