I am not sure how to proceed with this in a HV way. Should I move on from this friendship?

I (25F) messed up with my friend (33F). How do I fix this? Should I even fix this? Reddit tells me no. But... that's Reddit lol. I value your opinions and thoughts. I believe I handled this situation immaturely in my opinion as a socially anxious person in her 20’s!

I originally met her at church and we clicked so well! We had weekly Bible study together and would go on group events and fun events. We would often meet up once a month just us two at Starbucks to chat for a couple hours.

I stopped going to church (for other reasons) and I didn’t see her as often. We had a plan set up to still meet and chat. Then, her dad passed and she said that she may be slow to text back. I completely understood and offered comfort and such.

So she didn’t respond for a few months. I reached out to her again and she didn’t respond for more months..So I actually … deleted her number off my phone. I took it personally. I was sad. Months later I saw on Instagram that she got married. I congratulated her in her comments and complimented her. A few weeks after that, in the real world I encountered something that was an inside joke between us. I texted her (I got her number from our mutual friend) about it and she texted me back a month later and apologized that she’s been backed up with texts, she was asking me how I was, she seemed generally happy to respond back to me. I didn’t take it personally this time because I know she’s newly married and life is changing a lot right now.

This is where I messed up. I didn’t reply as I started a new full time job and I had a bunch of problems in my life. I got so busy. My phone broke and I am bad about iCloud so I just started on a clean slate. I meant to reply, but I didn’t (not purposely) Four months after she sent the text, she unfollowed me on Instagram. I messed up again by unfollowing her back and not reaching out to her and ask her if I upset her. I was immature! I assumed she didn’t like me anymore and just tried to get over the hurt.

Three months after that (yesterday lol), I opened my old laptop and I saw our chat. It was ME who never replied back!!!

I do not know how to proceed with this. I am embarrassed that I unfollowed her back instead of just reaching out to her. I don't even know why she unfollowed me...I’m a socially anxious person and awkward so sorry if this seems like a simple solution…..I really don’t know what to text back. And if I should at all?

Should I move on from this friendship? Am I reading everything incorrectly?