How can I withdraw the amount in my youtrip app to my bank account?

I think it' more worth it to spend it on transport since there's a fee for withdrawing the funds.

One cannot withdraw money from youtrip to bank account. However, you can use the youtrip card like a debit/credit card in sg to use the money inside. Hence, be mindful of the amount of money you put into youtrip, and there is an annual limit to deposit into youtrip.