Coping with anxiety and depression tips?

I am a total newbie to 7cups but at this time, and lately i have really needed to vent and talk. Hopefully I am not alone, does anyone have anxiety and get depressed over simple things and it is like a shadow which comes back, then you're happy and then for whatever reason you are sad again? I have been struggling with this for years and lately i have finally decided to acknowledge it and try to work on it. Being quarantined is SO difficult, the overthinking doesn't stop, comparison to others in social media and to where i "should" be in life drives me insane. I love my boyfriend, but he is lucky and gets to go to a job while i am home all day. It is lonely, and it even feels worse when As a very sensitive woman I want more attention which i feel like I am not getting. I have this fear that my boyfriend will leave me for someone else since i am happy and then sad and its like a constant circle. How do i get better? I sometimes just feel like giving up... i am going insane and this seems never ending. Please help.