Only one biome in the whole world and locate commands dont work because of that

My world only has one biome that is normal tree/birch/flower forest and its thh only thing and therefore the locate command doesnt work so my world doesnt have ocean monuments mansions shipwrecks jungle temples desert temples and etc only thing that is there is a stronghold but if i go to the nether or end the command works and the biomes are there so its just for the overworld. Any help will be appreciated. By the way the world was originally created in 1.15.2 but later converted to 1.16