How to find previous changes made in scene of the unity model

I am texturing the a 3D model it was a week long process as I decided to continue the work other time. I saved the last changes and shut down the system. Few hours later I restarted the system and found that all my changes I have done was lost.
I am trying to bring all the changes I have made back by looking several unity platforms
Please guide me the correct solution to my problem
Any advice and suggestions will be highly appreciated
Thankyou

Good morning mate but I have bad news for you =( .As I know there is no auto save function in unity it means unity doesnt save scenes automatically you have to save them manually ctrl+s .I think in your last try you closed unity when its saving =(.

If you go to your game’s file and go to temp folder it has __Backupscenes folder. This may have your scene that you saved. Good Luck!