Is it normal that my friends sometimes don't respond?

Well it is normal in the world we live in becuase people are just selfish these days that they dont even think what it feels like to be ignored.. If someone ignores my texts I give them the benefit of the doubt the first time however if they ignore me more then 3 times constantly then I cut them out my life... REAL friends respect each other and WILL REPLY BACK regardless of whether your busy or not. DONT accept peoples lame excuse of IM BUSY,, because in reality NOBODY is to busy that they cant even take 30 seconds to reply back.. My advice to you would be to delete these fake friends who are ignoring you and find some REAL FRIENDS who will not disrespect you by ignoring you.

totally normal. it happens to me to. Sometimes people send me stuff and I don't respond immediately. Its almost always because I left facebook or messenger on but i'm not actually there at the time. It makes me feel bad that I didn't respond, but if it happens to you its totally normal. your friends don't hate u.

I sometimes start to text and a call comes in then I forget to send it.

Depends whether you've asked a direct question or not and how often you're sending them out.

it's normal. Some people take time to answer texts or sometimes people are too busy to answer.

I'd say it's normal. Personally, I don't really text people, I just call them, it feels so much more personal that way.