Ubuntu does not start "no bootable device"

Question

Ubuntu does not start in an acer e5-551 laptop and when I turn it on, a message appears that says "no bootable device"

I have used the boot repair tool from a USB but the recommended repair does not appear so I created a bootinfo summary.

This is the link. http://paste.ubuntu.com/p/hZZYdrB2bH/

UPDATE 1:

Using the testdisk tool I have obtained the following information:

partitions can't be recovered

partitions

I have listed the files of the partitions and I have been able to confirm the following:

• The HPFS - NTFS partition corresponds to the Windows partition.
• The Linux partition corresponds to the Ubuntu partition.

I understand that now before doing anything the first thing is to try to recover the files and once recovered try to restore the partitions.

I wanted to check with you before proceeding.