Usage of personal pronouns as someone gender neutral

I checked through the FAQ but did not find anything that might help me with this situation! I'm currently learning Japanese and plan to go to Japan before the end of this year. However, there is something that I'm unsure about. I'm nonbinary (agender) and I am not sure how okay it would be for me to use a pronoun other than "watashi" in casual conversation. I know that this is the most formal way to refer to yourself but I'm wondering if I can use something else in situations like engaging in conversation or like ordering something if it comes up (since these dont seem to be "formal" settings). Would it be proper to just go with "watashi" and stay formal or would those situations count as "casual" even though everyone I would meet would be basically a stranger? Would it be okay for me to use a more casual pronoun for myself when talking to peers or small talk?

by Komekuro