I WANT TO SHRINK THE VOLUME MORE THAN 77GB

My Dell G15 laptop is experiencing a problem where I'm unable to partition the hard drive into sections larger than 77GB. I’ve tried multiple methods to allocate more space, but the system consistently restricts the partition size. This limitation is unexpected, as the drive has ample capacity. I’m looking for a solution that will allow me to fully utilize the storage by creating larger partitions without encountering this restriction.

Can you guys help me?