Draining work weeks, starting to gain weight

I’ve gained at least five lbs (not water weight) in the past 2 weeks and I’m pretty sure it’s because, instead of walking or moving a lot after work, I’m going straight home and isolating/going to bed. Doesn’t help that I go to sleep to escape the feeling of loneliness. I’m typically on the clock from 8am - 6pm and afterwards I’m so done that I just want to scroll, manage household chores, and eat. The weekends are better but, like clockwork, during the week I’ve started shutting my whole self down. I don’t think it’s entirely due to work but I need some kind of motivation to at least get 10K steps in, I was doing that only 2 weeks ago….