normal.
Everyone has a right to have an opinion. If someone doesn´t like me, fair enough. I am not going to go kissing asses and making sure everyone likes me.
It is a shame of course when it comes to work because I work with people so them not liking me makes work harder, but whatever, I usually try to be polite and keep things civil. It is ok if they want to hate me behind my back, maybe I´ll quietly do the same, but we both need to do what we need to do.
When it comes to my personal life, it might be a sad, but I am probably going to try less to be civil and I will just openly not care.
Why bother whether people like you or not? There will always be someone who doesn´t. So? Are you going to break your back over it? Just appreciate those who actually honestly love you even more!