Hi Ikbun14, I've gone through phases of this as well. Where I've isolated myself somewhat from friends/family due to depression & anxiety, or troubles in my relationship.
I would suggest just being as honest and open as you comfortably can. In my relationships I apologized for my pulling away, and asked for their patience and understanding as I tried to do better.
When you are recovering from a break-up, I believe friends are willing to help. It's OK to ask them.
Also, suggest just getting together to do things that you know they enjoy doing, something that shows you're interested in them too, and want to rebuild the relationship.
Best of luck, I know this is hard.