No surprise, though: everything was better in the nineties.
Except the Celtics unfortunately lol
Truthfully though, the quality of films has taken a nosedive in the last 10-15 years. Unfortunately it is us the consumer that is at fault. This is due to online pirating movies, which led to the current streaming model. The loss of the secondary movie market (VHS & DVDs) caused production companies to take fewer financial risks.
I also think the fallout from GFC shrunk competition in production companies. It seems like Disney owns everything now.
There are still a lot of great movies every year but they're harder to find because studios only put marketing money behind existing IP. Anything actually interesting gets buried quick unless you're really looking for it. Last year was pretty weak but there was Love Lies Bleeding, Challengers, The Fall Guy, Conclave... I loved all of those and I'm still trying to catch up on stuff I missed.
As for great years... You can't go wrong with 1974: Chinatown, Godfather II, The Conversation, Blazing Saddles, Young Frankenstein, Death Wish, Alice Doesn't Live Here Anymore, The Taking of Pelham 123, Texas Chainsaw Massacre, Black Christmas, The Longest Yard, A Woman Under the Influence, The Parallax View, Foxy Brown