I also don't have an iPhone. I haven't tried posting photos yet on the forum other than getting my somewhat off-centered avatar in place. But I think I'll be able to post, as Knobby noted in #3 comment, from my computer.
Last year I went from a MS Lenovo PC, which faded away, to a Chromebook. Using my new computer has been quite the challenge. I took a C.E. training class last fall to learn the parallel google software (Sheets, Docs, Slides) to the MS Professional package. I still stumble around this "foreign-to-me" software, but doing much better. At first I spent a number of nervous days completely off-the-grid. At the same time I changed to gmail as a new email software. You can imagine the fun times.
When I fired up the Chromebook, my camera's photo upload software could not be supported on the Chromebook. I still use an excellent older Nikon Cool-Pix 35mm auto-focus camera. I went after this challenge, and have managed to do photo posting from my camera directly to my computer files, eventually placing in The Cloud. There probably is a more efficient method, but since what I do works, I've decided not to try another route.
Since I just joined the conversation, I'm taking some photos of my Beltuna accordion. Plan to try some photo posts here before long.
Any members here work on a Chromebook? That would be helpful to know the next time I scrape my nose against a software brick wall! :*)