If you can't find the temple just spawn a librarian villager (w/ the white coat), trade until the 4th tier or so and he will trade you the ocean map and the woodland map which will lead you to the guardian temple and the woodland mansion respectively. It is a little bit difficult to find but cut some slack bc it is hard to find these seeds. I hope this helps.
It works and if you have trouble finding it just spawn a librarian villager and trade until the 4th tier which will give you the ocean map. Use the map to find the temple and then just endure through the top since it's easiest.
Woah i found the temple withe the 4 chests but when i opened one it set off tnt which destroyed the sand temple.But after i vowed to myself to find the ocean monument it took me around two minutes to find it after the sand temple exploded
It will work for sure.