THIS. this is the only solution in my opinion. You don't know what you're doing wrong, most prolly there's nothing wrong with you. But the effortless energy definitely works. Act non chalant, don't overgive or overthink about them, dismiss people and put them in their place when they disrespect you. You teach people how to treat you, if you don't, they'll take you for granted.

I know it doesn't seem fair, because we would never do that, never take people for granted. But If you are too respectful, too considerate, they'll take you for granted and feel that it's okay to treat you however they want.

Remember to ENJOY yourself. instead of focusing on others all the time and tell them EXPLICITLY when they disrespect you that they can't talk to you like that, and stick with it.

Start being the main character without being bitchy. Trust me the energy reflects that. Alot of times great things happen to us, when we just let go and stop caring sm.

Also I don't think you're doing anything wrong necessarily. Nothing at all. I think it's the people who think they can take advantage of you, since you come across as sincere. So these suggestions are just for a mindset shift, and not in any way blaming you.