Godot Version
4.3
Question
if i enter my main.tscn, i see that it turned into a missing node and i dont know what to do, here is how it looks like:
I think this file is corrupted or you deleted all nodes from the scene including root node.
its maybe corrupted because i deleted nothing
how can i fix it
You should be able to retrieve the data from the node if you open it in the text editor.
where is the text editor.you mean the script?
No, I mean a regular Notepad that your operating system provides. E.g. on Windows RMB on the file > Open with… > Notepad.
Then you can copy and paste here all the text that you find there and we might be able to help you recreate your node
i opened the scene with nodepad and here is wait it says:
[gd_scene format=3 uid=“uid://c5l2u00554784”]
[node name=“MissingNode” type=“Object”]
_import_path = NodePath(“”)
unique_name_in_owner = false
process_mode = 0
process_priority = 0
process_physics_priority = 0
process_thread_group = 0
physics_interpolation_mode = 0
auto_translate_mode = 0
editor_description = “”
script = null
hello?
Ok, it doesn’t have any useful information, the Node got completely corrupted.
Do you have a backup of your project that you can go back to? If not, that’s a good lesson to do backups in the future - look up how to use git and use it for all of your projects.
I don’t see any other way of restoring your Node other than rebuilding it again.
sadly not 
i worked on it over like a year, but now its gone.BUT i will just make a fun minigame that will have a backup