I am once again reminding you that adding alt text to wall-of-text screencaps doesn't have to be a difficult thing. Copy-paste works on both iOS and Android phones (Android tablets are a different thing). Also there are shortcuts for iOS that can strip text from images. routinehub.co/shortcut/18370

If your iPhone is older--like iOS 15 older--that shortcut will ordinal not work for you. This one will. routinehub.co/shortcut/18368

BUT. If it is difficult for whatever reason you can add the keyword "alt4me" to your post text or to the image alt text field to request help from volunteers who'll do their best to add the text (as a reply to the post) for you.