I'm playing dragonflight a lot too and ive had many similar experiences, but I also do play with friends and got an m+ team and stuff like that. But outside of title pushing I prolly do 80% of my keys and raids as pugs on my alts (healer, primarily). For me sometimes I dont mind helping new players out or help people understand but the thing with raid pugs is that players are a commodity and most people wont ever have a connection with anyone there so someone repeatedly fucking something up is not worth the time to help cause you wont ever see them again and its always new people doing the same mistakes every week. So the incentive isn't really there to help. It's also a stark contrast between classic and retail in that sense, since you kinda have to stick it out and help people in classic due to the lockouts not being flexible. So in a sense I think the fact people are not "locked" to your raid ID for the week highly fuels this commodity view of raiders in retail :)