Fusion Drive Replaced Not Freeing up Disk Space

Hi Team,

I need some help as I’m running out of space.

I had my HD replaced with a 2TB SSD. All seemed to be well. But now I’m not able to free up space. I deleted hundreds of GB of files, yes I emptied trash, but the space is not becoming available.

On investigation, it appears that I still have a Fusion Drive system, I’m not sure if this is causing the problem. Also my drive utility shows the below. which is confusing:

Please help.

Many thanks,

Matt