Exercise is the best cure for depression. Get a bicycle and start exploring new places around you. Endurance exercise is most useful for balancing metabolism and hormones. Do it every day, and only for your well being. You may find it is life altering. It only takes around 2 months of pushing yourself when the routine seems difficult. After the initial startup, it becomes harder and harder to stop the routine over time.

A lot of my advanced curiosities and interests all started from needing to fix stuff like my first car, or putting together junk PC parts to get something to play Doom back in the day when Doom was barely on the trailing edge of gaming. Learn to use FOSS tools on a computer. There is a free way to do everything. If you learn these tools well, it will pay off substantially in life. The entire digital underworld runs on open source software.