Could you suggest how to use Alipay or WechatPay as a foreigner without a local bank account?

Things like city bikes are great and very convenient. In Kaohsiung it used docking stations and a metro card. From what I hear, in China they are dockless, and use mobile apps (which means an expensive roaming data plan) and Chinese payments. These may be convenient for locals, but very user-unfriendly to foreigners. Locals probably have their routine figured out, whereas foreigners are probably going to visit new places, and will therefore use bicycles more.