For me this happens when my anxiety is bad, maybe that might be something that affects you too I don't know.

Yes it's good practice to remind yourself it is not necessarily about you but about them. I had someone close to me be very offhand with me this summer, when I voiced an objection they cut me out and all but stopped speaking to me. I only recently found out this person was having horrendous family problems at that time, they apologised for taking it out on me. I wish they had told me at the time but people quite often don't act in ways which are helpful, I know that can be true of me too.

It's impossible to fully understand what influences people's behaviour unless they choose to tell us.