Hello. I do sympathise. I manage by always having the radio on during the day, usually tuned to the local station which for me is BBC Radio Lincolnshire. Over the years they have become almost friends. It's also useful for telling me if there's anything of interest on that I could go to. I know what you mean about friends having problems too, you feel like you're bothering them if you tell them how you feel. Have you got any charity shops near to you? I volunteer for the local hospice one, and we have a great time. I only go once a fortnight, but it helps. Some people actually go into the hospice to help in various ways but I'm too far away for that.
Hope this helps a bit, but don't be ashamed, we all get low times. Sending a hug.