i want to switch to 1.2.13.60 to do set seed glitched, but i dont know how.

Sorry if this answer isn’t very helpful, but I don’t think you can.

I'm sure that there are lots of tutorials on youtube

You can’t on any platform but you may be able to use Minecraft education edition for 1.14 but not to sure you will need to ask the mods about that

@SalmonTooth1568SalmonTooth1568 you can downgrade pc and android