Are you a hermit by nature? Do you like being alone? Me, too!
Coupled with depression that loner tendency can morph into withdrawal.
Start re-thinking social isolation, and make an effort to socialize just a little bit more. Now that COVID has eased substantially, make sure you're vaccinated and venture out into the world!
Volunteer for a couple of hours, go out after work with co-workers, or simply reach out to a friend.
You don't need to change your basic character, but shifting away from social isolation may ease depression a bit.