Opening scene just didn't make sense if sling rings exist.

Then you have a bizarre and pretty pointless villian. Like ago we get you wanted to milk a tv series first, but that storyline was done, can we please just have a proper storyline and not a weird mess with a laughable villain with laughable reasoning.

Sam clearly had no idea what to do with these characters and basically tried to write a pg horror movie without suceeding.

Only Black Widow is a worst MCU movie.