Thinking of texting my ex

Some backstory, I have been broken up for about 4 months now out of a 9 month long relationship. She was my first girlfriend, first kiss, first hug etc. Everything during the relationship was great and although we were both young (18 and 19) we had both agreed that we wanted this to last and wanted to grow together. However it was one April night where I got a text, then I called her, then I drove to her house so we could talk and her mind was set that we needed to breakup. Her reasoning that night was stuff that I feel like you shouldn’t break up over and her answers changed a bunch, it was I was being “unsupportive” which i know isn’t true because she’s literally told me all the time how supportive i was. Then it was “I miss time spending with my family and friends.” That night she said we could be able to talk again in one month so I took it as a break. But lo and behold I was gone from her instagram, blocked on Snapchat, unfollowed on instagram. So I texted her asking what really happened I had so many questions and everything and she said this

“i enjoyed our time while we were together but there were times i realized that we are simply not compatible. I appreciated your love and kindness and i will always treasure that. i wish the best for you and your family and please respect my decision that i want to be single at this time.”

Anyways that was about 4 months ago, and i still can’t stop thinking about her, wondering why she had to do this, why it couldn’t be me and us. She’s in my thoughts all the time, all the memories and loved shared etc etc. I recently just had a dream of her and I’m thinking of texting her. Not to say I want her back not be negative or anything either. But to say how I was sorry for any time I was being over sensitive, over thinking in the relationship (those two things would cause hard talks and disagreements) and how I hope that she finds the peace I wasn’t able to give her. I’m 95% I’m blocked on iMessage anyways, so sending this is more for me than anything but idk, what do you guys think?