Sometimes venting already helps you find your path, so no worries at all.

Maybe just start typing a draft, don't think about a community or such, just write. And then let it sit and go over it hour or days later to decide whether you want to edit or post it. At that point you could consider finding a community that this particular content fits into and post to it.

I am assuming that you are still gaming even though you are not streaming it anymore. But if you want to post about a cool game or two there's the Hive Gaming community.

If it's more about daily life, joys or struggles - Silver Bloggers is a community I am currently looking into and considering posting to.

Most of all, don't pressure yourself, that - in my experience - will lead to blogging block. Sometimes all it takes is having a few drafts in PeakD and pick one and continue typing.

Looking forward to reading your next post!