Hi there,
Thanks for reaching out. We're here to help.
Which version of Photoshop are you using?
There are several ways to remove the background of this image.
1) Using Quick Actions "Remove background" in the properties panel. (PS 2020 and above)

2) With the magic wand tool, select the background, and delete the selection.

(Note: You need to refine the edges )
3) Use brush + Lasso Tool to create a Layer Mask.

Let us know if this helps.
Regards,
Ranjisha