TRIPPING
Starting in 2023, tripping is now a personal foul, 15-yard penalty and is subject to additional discipline whether it is called or not called on the field by officials.
What is tripping? The use of the leg or foot to obstruct any opponent (including a runner).
https://operations.nfl.com/the-rules/rules-changes/2023-rules-changes-and-points-of-clarification/