Need some insight on acquiring a new credit card

Back story: 26M

Income: $150,000-$180,000

Credit score: 833

Expenses: Gas, dining, grocery, insurances, shopping, (not travelling as much as I should)

Just took out a loan on a car 2 weeks ago with an interest rate at 5.1 if that makes a difference in any decision.

Current cards:

Discover: (also my longest card since 2019)

Earn 2% Cashback Bonus® at Gas Stations and Restaurants on up to $1,000 in combined purchases each quarter, automatically. Plus earn unlimited 1% cash back on all other purchases.

Plan: I called to try and convert it/upgrade and they are not allowing that. So I plan on using it only for a Spotify Bill of $10 or should I stop using this ?

Bank of America:

Student card with NO CASH BACK OFFERS.

Plan: I also called to try and convert/upgrade and they are not allowing that, only applying for a new credit card. It’s paid off I owe $0. Plan is to not use it anymore and let it sit until they close my account ?

*also the loan for my car is with Bank of America*

Citibank:

Custom cash: 5X

Thank You® Points on the first $500 spent in the eligible category where you spend the most each billing cycle

Plan: Keep it.

As you can see I only have 1 good credit card which is the citibank. Would it be alright/necessary to apply for 2 more credit cards ?

Potential setup:

1. Apply for Amex blue cash everyday:

Grocery: 3%

Online retail: 3%

Gas station: 3%

Any other purchase: 1%

With my Citi custom cash:

If I can only pick one category it will be *Restaurants – 5%

*covers almost everything except in store purchases* – pharmacy ? Walmart ? Mall ? Shopping ? Home depot? Etc.*

1. Apply for Amex blue cash preferred:

Grocery: 6%

Gas station: 3%

With my citi custom cash:

If I can only pick one category it will be *Restaurants – 5%

Apply for Apple Card to help cover that gap of online purchases and in store purchases with Apple Pay ?

In store purchase/online retail with Apple Pay: 2%

All apple products, Uber, gas station, Nike, walgreen: 3%

*I use my Apple Pay everyday and for almost everything*

And put my earnings in there HYSA ?

-also chase and jp Morgan just bought the Apple credit card so I wonder where that’s gonna go.

1. Get Amex blue cash everyday:

Grocery: 3%

Online retail: 3%

Gas station: 3%

Any other purchase: 1%

With my Citi custom cash:

Restaurants – 5%

*And wait till one day I get accepted for the Robinhood Gold card? I’m on the waitlist still and wouldn’t mind getting

3% cash back but I don’t really use there platform as much and I don’t meet the criteria just yet to be off the waitlist (I spoke with a representative)*

I am leaning towards the second option but I would like to hear everyone’s opinion and be educated on what to do next or if there’s another credit card to check out.

Any help would be appreciated thank you.