Bayern Munich is playing at home, so they have a very good chance of winning. It's natural that the betting market favors them with small odds, as it's well worth the potential.
Furthermore, Leipzig hasn't made many changes for next season, and many predict they won't improve on last season. So I don't think Leipzig can beat Bayern in their first match of the season.
In last five consecutives season, Bayern Munich never defeating at Bundesliga opening match by winning 4 of 5 games, I don't think difficult for winning the next season opening match for Bayern Munich when facing RB Leipzig. Playing at home make Bayern Munich more confidence for securing first three points and seems no doubt favorite Bayern Munich for winning Bundesliga back to back.
Small change for RB Leipzig get winning over Bayern Munich never defeating yet at the opening of Bundesliga matches since season 2020/21, seems Bayern easily for winning the opening match by scoring around two until three goals how the pre season matches result become more productive team, but Bayern will face important DFL Super Cup final match against Stuttgart before against RB Leipzig one week later.