I had issue with the last OS that it would sometime take 3-4 tries to put my iMac to sleep before it would stick. Now I just have to turn it off if I don't want the screen shining all night. Hate to say it but this new OS sucks, I have so many issues of things not working correctly or not working at all, and it's hit or miss. Copy and paste only works about half the time on half the apps. Text to speech is equally only half functional and no longer a right click option. And it's even worse on my iPhone. They don't fix the obvious flaws and only seem to hobble what was working.
Apple needs to stop focusing on having a new OS every year just to change the look and disrupt the functionality. It's like billionaires trying to solve the shopping experience of blue collar workers - they have lost touch of what made the company so great. I may switch to android because if I am going to be this frustrated I should have a better reason than wishing I had not upgraded the operating system.
30 years of using Apple and I may be done.