opinions pls?

I need advice and unsure if anyone can relate to this. my dad passed away almost two years ago and I noticed when he passed my life really changed and I didn’t have this desire to worry about friendships, maintaining friendships and I sort of just did my own thing. despite what I went through I still always made effort to reach out or text but I’m noticing that if I’m not the one that does the reaching out I won’t hear from any of my friends. I only noticed this when he passed and everyone was close to me prior. I’m not sure why my grief made me lose people? I care but I also don’t care at the same time.