Without a doubt it has to be Accor,
Because Accor points are worth 1.86 or at least 93 Paisa if you consider only meals.
Whereas the other Airmiles and Hotel points are worth 50 to 90 Paisa only.
So Accor points are worth so much more.
When I was a newbie like you I didn't know this, and I foolishly converted my first Axis points into Singapore airmiles, based on some influencers recommendation