I find it’s often better to help yourself before you help others. You shouldn’t ignore others but instead spend more of your energy and focus on yourself first.
I’ve seen and experienced people who focused all their energy on helping others while ignoring their own issues. Their help was often too much in an overwhelming way and would cause others to react in a way where they would be worse off than before. Now two people feel worse. The helper for not being able to help and the helpee who has been overwhelmed.
A person only has so much energy. It may feel selfish to help yourself first. Others may try to guilt you for putting yourself first but they aren’t you and they don’t know your needs and limits.
You do you first. Then when you are ready to help others, you can actually help them because you have a clearer head to focus on them.
I’m not a fan of labels because I can never keep up with the constant changing of meaning or the new labels that keep appearing.
Instead I focus on peoples actions to figure out how I am to handle them. The most common behaviour I see in people who act more in their own self interest is manipulation. They want to control as much as possible. That includes the situation and the people around them.
The simplest thing to do is observe. Watch what they do. Watch how they interact with people around them. I often ask myself a bunch of questions about that behaviour. Do the words they say match what they do? Where is the attention coming from and where is it going? What tools do they use to bring attention to themselves? Is there a power imbalance between them and someone else? What tools do they use to control that power imbalance? Who is gaining something and who is losing something in those interactions? Why do they care so much about something that seems insignificant?
That’s not a complete list or anything. People are creative in good and bad ways so it’s more of a developed skill which takes time to grow. You may find other observations or questions to help you filter out manipulative people.
As a quiet person who has spent more time observing than talking, I’ve always been a target for manipulators. They seem to think my quietness is submission. I’ve dealt with far too many manipulators so much of what I said comes from those experiences.
I often deal with manipulative people by either acting dumb or figuring out the tools they are using or willing to use on me and deny them the chance to use those tools on me any further.