Samsung galax S9 downgrade to Oreo from Pie


Hey Max! I accidentaly upgraded my beloved Galaxy S9 Oreo to Pie in the end of january. I don’t know what Android was thinking but my opinion is that simply just the app switcher especially with the one UI makes it UNUSABLE. I hate it, it is evern worse than iOS was 5 years ago, so I end up hating my phone, and I want to put back the STOCK OREO.
I tried flashing it with odin, but even with the OEM unlocking, with the right stock firmware, it FAILS every time.
I use to root my phones all the time but in the end something always went sideways, that’s why I bought this high class phone, which I love btw, but not anymore thanks to Pie…
Can you help me find a solution?