Sorry for using English, but I am asking for help because I am unable to write in Your language.
You can directly improve OSM editors, without any coding by improving translations.
Translating requires only knowledge about more than one language - usually English and any other language.
For example - StreetComplete (this editor has also quite nice translating interface - and I am a bit involved in improving it).
See
https://github.com/westnordost/StreetComplete/blob/master/CONTRIBUTING.md#translating-the-app for links to translation platform
https://poeditor.com/join/project/IE4GC127Ki is a direct link for new people,
https://poeditor.com/projects/ is for people who already joined one of languages.
See
https://wiki.openstreetmap.org/wiki/Translation#Editors_and_other_contributing_tools for other OSM software
PS If you have any question about StreetComplete - I can answer, but sadly I can use only English