MK11 is boring. They tried too hard to make a "real" fighting game and lost some of their identity
After a game like MKX, which was fast as fukk, you don't deviate from that and make a game where it feels like nikkas are fighting in mud
They also toned down the offense. You can tell NRS felt like MKX may have been too overwhelming for a lot of players so they dumbed it down. This is the reason a lot of pros have gone back to playing X. The fukkery is glorious
MKX is the GOAT Mortal Kombat game
It felt like MK11 tried to cater to tournament play with the slower gameplay and shorter combo strings. They wanted to make people play the neutral game rather than the rush down 50/50 mix gameplay from MKX. Basically tried to make it Street fighter.
Issue is that MK fans really like that fast paced kaotic gameplay, and the type of people who are into slower paced gameplay don't fukk with MK.
Personally I preferred 11 because it has the best version of scorpion.