Reflect x-axis on linux tty without GUI and without xrandr -x

I use an trisquel-gnu/linux(ubuntu-like) system with LXDE as GUI.
Now I want to run old computers without GUI.

If I use the command “xrandr -x” in terminal with linux system(with GUI), the wohle screen is reflected on x-axis. So Text is Mirror-text like:

wo

changes to
ow

Even the windows are reflectet like a mirror would be on the right or left side of your display, and you would watch into the mirror.
I use this way my computer, so also reading not from left to right. I read text inverted from right to left. The letters are each themselves mirrored.
Without graphical user interface, I can’t use xrandr -x. So I am searching for a command, which inverts the whole screen to x-axis timeless in tty. So I can read text and use commands mirrored, always text starts from the right side of the screen.
It is like arabic is written, but Latin letters.