There are a couple of things that people-pleasers don't realise.
The first is that people don't value you according to the value you give them, they value you according to the value you place on yourself.
This means that it is best to hold your own self, time and activities as being of utmost importance at the start of a relationship of any type, and, as mumsnet likes to say, only give as much as you would be happy to lose completely.
The second - and this is huge - we create greater intimacy when we allow others to help us. When you become the one everyone relies on, not only do you find you have no-one to rely on yourself, it also has the effect of shutting down intimacy, because people love to feel valuable, and allowing them to help gives them that feeling.
So this is why relationships should always be reciprocal. I had to be really firm with myself at first with this, especially with new people and acquaintances. I will help at the drop of a hat if someone asks, but unless they outright ask, I don't offer help. Hints are ignored, as hints are very often attempts at manipulation.
If I need help with something, I ask - and again, this is hard, so begin with something small. If someone is not a helper type, they will dodge it, but the vast majority of people will want to help, so if you have helped someone, and they won't help you, that is an important data point about where they should sit in your circle of trust.
Natalie Lue has some great resources on the circle of trust and other great advice for relationships of all types:
https://www.baggagereclaim.co.uk/circle-of-trust-discernment/
and this is a decent explanation of the importance of allowing others to help:
https://www.psychologytoday.com/us/blog/compassion-matters/202110/how-let-people-help-you