I think I should stop being nice to everyone all the time, most people don't care they just want to go out there and do what they have to do and they don't give af about your feelings so they gonna treat you like "whatever" but I can't, I worry too much about others, I apologize all the time... I want to please all the time
Nobody is responsible for your feelings.
You're not responsible for anyone else's feelings.
Sensitivity and humility and softness is wonderful, and you should feel free to be this way with good and proven trustworthy people.
But you have to be capable and comfortable with being mean and unyielding when you have to, because you are guaranteed to have to with everybody you meet at some point in your life.
Conflict and friction and sharp language is necessary to experience and wield in order to learn to draw and enforce boundaries and define what is yours and what is theirs.
The sooner you go through conflict, take your ground and stand your ground, and learn to fight at whatever level a situation calls for, the better. Even if you lose, the practice of standing up and fighting is very valuable and will help you toughen up.
After accomplishing this, your next great challenge will be developing the ability to discern how soft or firm you should be at any given time, and how to pick your battles and when to cut your losses.
Be kind, be nice, be pleasant, but don't be a doormat and don't be sweet to just anybody, because not everyone deserves it.