How to create a custom layer with own lat and long data so that I can use on my server?

hey, everybody! Excuse Me for my elementary question, I want to use from OSM for my web application. So I want to create a number of layers, for example, the hospital layer, drug store layer, and so on.

I did try 'josm' and 'qjis' too.

My question is "How to create a custom layer with own lat and long data so that I can use on my server?" OR "How to edit a layer and add own lat and long data to it?"

Thanks and regards, Ali Hajqani.