Depression is an awful vicious cycle to live with and lead to serious consequences as I've seen and experienced. It's difficult to have perspective when one can only see through that lens and leads us to becoming irrational.
It's important to acknowledge it, give yourself a chance to breathe and tackle it with a gentle combination of approaches. Talking therapies are helpful if available to you. Good to hear that you like being in nature, it's a calming experience, sitting in as part of the greater whole. Glad to hear you also felt a difference around others, we may still feel down on the inside but over time having company can lessen the the impact and open us up to feeling different.