Where to find in Minecraft Kakte?

Well I know that she finds me in the normal desert, but I wanted to ask if you can find it on a beach that borders on a green space.

They are practically only found in the desert. If the beach is big enough, you may be able to find isolated ones

Your question is very easy to answer by typing "kaktus minecraft" in a search engine, for example https://google.com/...google.com, and clicking on the first link that should lead to the https://minecraft-de.gamepedia.com/...com/Kaktus. There, all required information can be found.

But since I have nothing better to do than to write this, we now come to 2 … You can find cacti only in deserts and table mountains, on beaches it would make little sense.