my friends ignore me

I've noticed that many of my friends leave me on read and delivered a lot of the time. sometimes for days. one of them left me on delivered for months, but our convos are good. i actually barely text some of my friends bc we aren't that close, which is fine. I'm planning on not texting anyone first and seeing what happens. but am I overreacting for being a bit sad or is this normal??? it's already hard enough to make new friends at this point in school, and I'm a naturally withdrawn person too.