I'm going to exclude my depressed friend
Why do you want to exclude your depressed friend?
I don't think he fits with me
It is hard to deal with friend who have depression but it is not nice to exclude them. Instead, you should talk to your friend and find out what they might enjoy doing together.
It's fine I just don't feel like hanging out.
It's understandable if you are not in the mood to hang out. However, you should be sure to include your friend when you are in the mood to hang out. Your kindness may be exactly what your friend needs.