I think we should give McVay and the Rams a break on the SF game.
The Rams had 2 weeks to prepare for the Hawks after the debacle in Miami. Rams with rest and planning the Rams played much better.
Not only did SF have 2 weeks to prepare for the Rams, the Rams were coming of a Monday Night game in Tampa and they couldn't practice on Friday due to Covid.
The Rams faced a well rested and prepared team. Shanahan is a top coach with 2 weeks to plan any team would have a tough time.
Football is much more dependent on planning and scheming than any other sport. A perfect example how one coach can inherit the same players and take and team to the Super Bowl while the other coach rarely goes 8-8 (Fisher).