Ligue 1 which is taking place is quite competitive I think in the 2020-2021 season. At least at that time, the top 4 standings competed with a small point difference. Lille managed to win the Ligue 1 trophy with only 1 point difference from PSG.
As I recall in the 2022-2023 season, League 1 looked competitive even though only PSG and Lens were competing to get to the top of the standings. At that time, Lens performed really impressively and only lost 4 times. While PSG lost 7 times. Unfortunately, in that season, Lens drew more often. So Lens had to fail to win the title when they had a difference of only 1 point.
Last season, there was also competitive competition but only until the middle of the season. Because Monaco and Brest experienced a decline in performance in the middle of the season and made it very easy for PSG to rise to the top of the standings.
The conclusion is, actually League 1 can be more competitive if several teams are able to maintain the stability of their performance consistently.