Do I get a new credit card?

Current Line up- AMEX Gold CapitalOne VentureX - 41K limit Chase United explorer - $15k limit Apple Card - $10k limit Discover - I Do Not use this card - $5k limit Monthly revolving utilization - 5% No missed payments, all statements paid in full monthly

I’m asking this question because I’m wondering if the Chase upgrade is worth it. Or are there other credit cards I should double up on ( expand portfolio)? Another credit card I should add to the mix? I have 2 different portals and points systems between AMEX and CapOne already. Is a chase upgrade from chase United worth it?

Goal - increase credit limit to bring down average utilization even further. Done the song and dance of requesting a credit limit increase too many times in relation to income increases and level.

Goal 2 - answering the question of am I missing huge cash back or benefits not having a specific credit card?

I really hate the credit karma and nerd wallet systems of “ tell us everything you have, we’ll recommend the best next step “. I find this to be a targeted marketing scheme.