Dual USB-C charger 20W

I own MagSafe Duo to charge my iPhone 13 Pro Max, my Apple Watch 7 and occasionally my Airpod Pro. In the second outlet I usually plug in my iPad mini. I noticed that the outlet for the MagSafe no longer works.

I guess I have to replace that 20W double charger, but I want to make sure what wattage I should chose. This one is a 20W, should I go higher.

Frequently I had both used at the same time and the Airpods Pro never finished charging on the now dead outlet.