After restarting the device screen lock is not getting displayed..Anyone facing the same issue?

I want to downgrade to Nougat on S8..am all done with Oreo and its problems.. Even so many users complained about oreo issues . Samsung not rolled out any fix. I don't need any fix.. Please rollout the nougat... Pleae don't copy paste your usual repl...

Many users have complained about the issues after oreo update in S8. When is Samsung planning to provide the update with the fix.

I am having S8,just a 1 week old mobile. Now my mobile battery is getting draining quickly after the Oreo update. Could you please check update ASAP.