Can't switch from dial-in carrier voicemail to visual voicemail

Hello all. I recently switched from an android phone to an iPhone. I bought the iPhone unlocked and swapped my Verizon 5G Sim card. On my android I always had to dial-in to listen to my voicemail.

All my friends and family with iPhones have visual voicemail but by default my iPhone is using the dial-in method and I can't find any way to change it. My research suggests there would be a "set up now" button, but there isn't - it just says "call voicemail". Help please.