I have a question about my current practice, but feel it's far too sensitive to share here. I do not personally know any person, teacher or guru who I could ask this question. What could I do in this instance?
Remarkably, for every single question I would have asked the Buddha or the Sangha, I've always found an answer in the suttas. There are a lot of suttas, so searching them can be overwhelming. The internet provides many ways to search the suttas. For example, for Early Buddhist Texts, Suttacentral.net has a prolific search engine that returns a massive number of results. For a more targeted search of a subset of the EBTs, Voice.suttacentral.net presents up to 50 directly relevant sutta results for arbitrary search strings. But these are only two examples--there are many other ways to find and search the Teachings.
However, for personal practice questions, it's also very helpful to talk with others as you've indicated. Personal practice question should really be directed towards a specific Sangha familiar with the nature of your own practice.
Buddhism StackExchange is not really designed for private chat exchanges. Although it does have chat rooms, these rooms are more for extended discussions about a specific topic of public interest. Nor is Buddhism SE intended for opinions and recommendations. Questions about personal practice should really be answered directly by the relevant Sangha for that practice. For example, Zen practice questions should be directed towards appropriate teachers or communities (e.g., Soto vs. Rinzai).
Instead of Buddhism StackExchange, which has a strict Q&A format, consider posting your question to more conversational Buddhist forums such as SuttaCentral Discuss and Discover. Such forums will support extended public conversations as well as private conversations held in confidence. Folks on such forums will often be quite happy to help direct you to Sanghas that may be able to assist you.
Most Monastics/Temples/Meditation Centers have a Youtube channel these days - especially in the West. They often have a weekly "Monk Chat" where people can ask questions in the chat and the monastics answer them live.
If you go to Buddhist Insights’ Youtube channel they have a weekly Monk Chat every Friday. You could try and ask your question there. A little tip is to be there at the beginning so you can type in your question as one of the first.