I just closed my Citi DoubleCash. It declines SO MUCH and foreign transaction fees are a pain. It also has basically no perks.

Just swapped it for a Capital One Venture X. Card has a $395 annual fee, but gives $400 in annual cash benefits spendable on travel ($100 can be used on any travel, $300 can be used on their portal, which is perfectly fine for booking flights).

Benefit is the app/ecosystem is a lot nicer and it's never declined a transaction. They also started me out with over 3x the credit limit as Citi did.

It also has return protection, extended warranty, etc.