Raw Images appear different to the Image that was taken (Lightroom Classic)
I was in the middle of editing a wedding session, when all of the sudden the images start to appear totally different from the original RAW file. When I started editing the Gallery everything was fine. Then after some time I realised, that the programm makes some images appear way brighter then the original RAW files. I didn't change anything or imported them with a preset. They sometimes look just like the shot RAW picture in the Library but look totally different in the Development section. I can't reset this "editing" made by the program. Also the Preview Image on the left side appears right in the first second but then switches.
I am using a Canon EOS R and never had any problems with my files.
Does anyone know where this weird "editing" comes from and how I can get my original original RAW file look back? It is really frustrating to see the original Image being made way brighter, then intended.