What is a seed?

I have been asking myself for a long time what actually brings me a seed in minecraft? I zock on ps4 and if I enter seeds nothing happens, but I do not know what brings me… I have also a personal seed that means if I enter the seed, for example, on the phone in minecraft I then there have my map on which I could continue to build on the phone? Or how is that?

https://www.mycryptlist.com/faq/was-ist-ein-seed/

If I seed because on the phone in minecraft can I enter then there my world? If you do not know then what I can do that I have my map on the phone so that I can then continue to build on the phone in my map

If you enter a seed, then the same world always comes out.

To generate worlds, Minecraft needs random numbers to generate different regions.

If you enter the initial seed value, then Minecraft always makes the same random numbers and the world always looks the same.

Hope that helps you!

A seed is a code that creates a very special world.

you can search, enter, and then get that exact world on the internet.

Does that mean if I enter my seed on the phone then I have on the phone my map as on the ps4 and can then continue to build. If you do not know what I can do that I have on the phone the same map as on the ps4 that I can then continue to build on the phone?

I answered you the question
Just read my answer
And no, that does not mean it

If it is the same minecraft "operating system" then you can copy the world otherwise I do not know it just played on the pc