Credit card suggestions

Hi folks, I'm looking for some suggestions to maximise cashback. Monthly spend is a little above 1L. Around 30k on upi (not using credit card for this as of now), 20-30k on online shopping (Amazon, Flipkart, Myntra), 4-5k on Zomato, 4-5k on dine out, 10k on fuel and 10-20k on miscellaneous (car/bike insurance, appliance repairs, hospital). Don't have any health insurance apart from what i already get from my corporate office. I book flights twice every year for 4 people. HDFC Millennia Diners Club - has limit of 4.5+L. This is the card I use for most online transactions and merchant outlets. I get the quarterly 1L quota for 1k gift card in most quarters ICICI Amazon pay - has limit of 5+L. Use it for high value Amazon transaction as it has no upper limit on cash back. Also use it with merchants that don't accept diners club. ICICI coral visa platinum - 5+L limit. I rarely use it. Sometimes for fuel. This was my first card and haven't closed it since. PS- not able to post in r/creditcardsindia because my account is new.