I spend roughly the 1L a month with all my credit cards. Limit combined of my all cards is 12L.
For online shopping on Amazon Flipkart Myntra Swiggy etc I use amazon icici card and hdfc millenia.
For offline and online international purchases I use Amex card. For offers on apple products I use HDFC regalia. And for all other purchases and UPI, I use IDFC wealth card.
This gives me best returns of 5-6%