I am a fan of Mortal Kombat Series. Mk11 is the best mortal kombat game I have ever played after MkX. It has best and in-depth tutorial until now. Storywise also I like it alot, how ****** becomes *********** and defeats Cetrion with 3 ending variation in the end depending upon last fight. Pretty good customization and Krypt is huge and fun to explore. Couple of puzzles in Krypt as well(Krypt is a place where you spend your ingame koins to open chest where you get inventories, skins, etc). As soon as you learn and understand your character you want to choose for learning, google your characters best moves and kombos they can perform. Kombos takes time to grasp to sync with time but its easy if you get on to it. Kombos are difficult but not impossible. I get pretty decent ping of about 100-200 which is playable, above then that my kombos dont work.
Online matches are also fun, there are 2 types of matches, one is Kasual and another is Ranked. Ranked matches are competitive matches where compete to get high rank. Ranked matches are season wise just like pubg, etc where it matches a player according to your rank not the pros who has higher rank. And yes there might be many scenarios where you might get disconnected because game thinks you are not synchronized :( but it happens 30% only).
If you are planning to buy, go for it. Its fun and enjoyable.