i have seen many people say the website freetoattach.com helped them. just based on what you wrote, i get the vibe of you demonstrating dismissive-avoidant attachment tendencies, but obviously i don’t know you lol so you will need to see which style you resemble most on your own after researching. after you find the closest style that you think you might have, you can work on getting to a secure attachment style. i suggest looking at the channel “personal development school - thais gibson” on youtube. all of her content is about attachment theory and how to achieve a secure healthy attachment style.

keep in mind that most of the information will be presented through the lens of romantic relationships, but attachment theory applies to all types of relationships (familial, platonic, romantic, work, etc). once you start researching this stuff it may feel like you’re going down an overwhelming rabbit hole of information and self-reflection, my most important advice would be to not become complacent by making your current attachment style become an unchangeable part of your identity. (meaning some people will find out their attachment style and use it to make excuses for their behavior, how they treat people, or their unhealthy patterns, unfortunately.) it’s actually something that can be worked on! :) you might also want to look into getting a therapist who uses attachment-based therapy too

sorry for the long reply, i started learning about attachment theory about a year ago and it really helped me, so i’m very passionate about it! it can be uncomfortable work to critically examine yourself and your relationships, but it’s worth it in my opinion! best of luck, have a good day :)