Clint Eastwood drives an old Ford pickup, and is worth 200 times what Ngannou is worth.
It's the difference between being insecure, and really not that much, and being completely confident, knowing you have all that money.
I remember an article in GQ, talking about all these "young Hollywood actors/actresses" demanding to be helicoptered-in to certain movie sites ... to make themselves "feel important"… while good old Clint just showed up in his old pickup, and drove himself, with zero pretentiousness.