"Bets on his own team" likely means for or against - any bet directly involving his own team. If any evidence exists that he willfully lost, it would likely go to the lifetime banishment.

Arguably betting against their team would be way more likely to trigger the "game fixing" interpretation.

I still think their tolerance for players gambling is insane. A player (or anyone employed by the team) caught gambling on the NFL in any way should be banned for life from interacting with the league in any capacity. If they buy a ticket to a game 100 years from now, they should have the cops called for trespassing. If a TV partner hires them, it should be a breach of contract the NFL can immediately terminate their rights for.

There's no way to respect the integrity of the league if a player caught gambling is allowed to come back in any capacity at any point.

Pete Rose was banned for life for betting afterall.

You can also engage in point shaving, so winning but by not as much/more than usual. So betting on your own team at all is a red flag.