i dunno about you guys, but im on bedrock and can go back to the aquatic update, make and customize the superflat world, then update it to modern version.
in the menu, there is one called "editions". you can only go back to the aquatic update. idk if its there bc im on ps4 but its there. i can make the old trial worlds and even do the minigames.
I play on Nintendo switch but my friend has a ps4 that he said he would give to me because he now has a ps5 so then I can probably ask my older sister for the old copy of Minecraft for ps4 that we had
idk for sure if it'll be there. it is for me but every other ps4 user ive heard from cant go back to aquatic update. idk if they dont know what the editions button does or its just not there.