You can be a trans ally regardless of how you identify gender-wise or how you feel about sharing your preferred pronouns to others.
There's more than one way to be trans. But the mainstream centres a certain trans experience/narrative above all others that includes the gender binary and presuming everyone has enough privilege, safety, and support that they can broadcast their pronouns widely without risk of discrimination, job loss, etc. A lot of trans people do not enjoy that level of freedom of expression - temporarily while in transition or migrating to safer place, or permanently. It's not uncommon to meet trans people who are critical of 'pronoun culture', which can refer to institutions doing the bare minimum to present a picture of inclusivity while failing to acknowledge current barriers.
I identify differently in different contexts, because disclosing my preferred pronouns is my right and I'm not going to do it to the detriment of my safety. Other people and institutions have to earn that trust first. So I generally don't broadcast pronouns, and they aren't that important to me. But when I see other people using them, I appreciate the roadmap for how they'd like me to interact with them.
I get a bit of a sense you might not yet have found an identity that really resonates with you. For me, feeling disconnected from my core sense of gender and feeling dissatisfied with life are highly associated.