bled lines but pedal still goes to floor when applied

Hello,

Make sure that there is no leak in the system. The wheel cylinders for the rear drums have a tendency to leak. Which will cause the pedal to go to the floor. Another possibility is a bad master cylinder, likely blown seal, which will prevent the master cylinder from building pressure for the brake.

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

Depending on if you have ABS or non-ABS brakes, the bleeding procedure is little different. I have attached the procedures below. Take a look at it, in case any steps were missed. Which may not lead to proper bleeding of the system.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.