You're allowed to need some space. You may feel better if you say so, rather than ghosting.
Something like:
"Sorry I've been ignoring our friendship, I've needed some space. I want to still be your friend, long term, in honor of what we've shared. I might still be quiet for awhile, but I'm okay and I appreciate you."
Friendships can go quiet for years and still be friendships, if both people don't mind.
Lots of folks replying don't seem believe in self empathy.
That makes me sad.
Self empathy is the foundation of empathy toward others.
The golden rule - treat others as I want to be treated - only really became effective, for my friends, after I learned to treat myself well.