@dandylover1 I haven't tried it, but if your device supports Talkback then https://support.google.com/accessibility/android/answer/6110948?hl=en#zippy=%2Cdefault-keymap lists the keyboard shortcuts for navigating around the screen.

I have just tried with Talkback gesture navigation and that lets me navigate to the menu, open it, and choose "Load newest posts", so I expect the keyboard shortcuts to do the same thing should work.