Trying to heal the fact that you're rarely felt seen and heard constantly from the outside and that you were often abandoned, can be a very long and stressful journey. Everything may trigger you: from having people taking all they can and giving you nothing or crumbs, not paying attention to/forgetting what you say or talking over you, misinterpreting you, leaving you suddenly or ghosting you, not asking how you do even though you do with them, remembering all the people that suddenly left you because they didn't had time for you anymore or didn't feel like including you and worrying if it's all that is gonna happen in your life...
It's pretty saddening and heartbreaking. And it may make you wonder if, by standing your ground and not accepting this but asking for respect, you're being too much/exaggerating it all or not. But you're very likely not exaggerating, you're just trying to learn to receive what you deserve. You're making yourself feel heard and seen by those who don't or aren't aware that they're not considering you (at times it's a matter of different sensitivity, of different points of view). And that's just you trying to balance things out. Keep working on this as at first your resentment may ring a bell even when it's not strictly necessary (you may get triggered also by behaviours that can be coincidental but they sum up to your past experiences, hence yes you may be exaggerating at times but you need to be too much too in order to find a balance); keep healing your heart: people won't always take a part of you and leave, nor you will have to leave them cause they hurt you. Find your true voice and let it be heard and respected.
