Could there be any other options since the Suzhou Museum was not available for reservation on that day?

There is no other way. You can reschedule for a later time.
Normally, Suzhou Museum needs to make an appointment one week in advance to make an appointment. You can also try a certain fish platform, or you can make a temporary appointment.
You need to make a reservation in advance, you can go another day
There is no other way. You can reschedule for a later time.
Normally, Suzhou Museum needs to make an appointment one week in advance to make an appointment. You can also try a certain fish platform, or you can make a temporary appointment.
You need to make a reservation in advance, you can go another day