IGNISREN As a test, please try playing in a clean user folder. Move the entire Sims 4 folder out of Documents > Electronic Arts and onto your desktop. When you launch the game, a clean folder will spawn with no content. (Your saves and other content will be intact in the folder you've moved but temporarily unread by the game.) Don't add anything to the new folder yet; just start a new save and see whether you see the same issues. Please do test both saving and traveling, separately if necessary. Use a new sim you create and a default EA-made house in a base game world, nothing from the Gallery.
If you still can't save your progress, please let me know what antivirus you use and whether OneDrive is running on this computer.
lolaawolf I'd like the same information from you as well.