> I started writing a “How to work with Julie” guide for my team
What?!
So your team tells you they don't feel cared for by you and your reaction is to write a guide for them on how to work with you? Talk about not getting the message.
I do think it's very important to have good communication, introspection and awareness of others as well as the way they work. But writing a guide about yourself and expecting others to follow it is not the best way to achieve that.
Maybe do write the guide, but keep it to yourself then use it as a way to get to know yourself better and see how you can improve your way of working with others.
In terms of building rapport in a safe environment, my preferred approach is to have standup-style meetings in which everyone in the team gets a turn to speak and they have an opportunity and space to open up and be vulnerable. This is usually lead by a manager that shows vulnerability first as a way to let the rest feel more at ease with sharing. You can do these weekly and they can last 15-30min. Over time they are very powerful and help tremendously in improving the way people treat each other, as well as detecting potential issues.
Edit: PS: Innerspace has some amazing free workshops about team building, communication at work and related topics/practices, mostly targeted towards startup founders. Highly recommend them - https://www.helloinnerspace.org