trash error code cant put ANYTHING IN THE TRASH

for a month or more now I have not been able to put ANYTHING IN THE TRASH

iMac OS Big Sur Rent 5k mid 2015

every time I get this pop up /

--The operation can’t be completed because an unexpected error occurred (error code -8004)--

Ive literally created folders on my desktop titled TRASH to dump at a later date because this is time consuming.

also theres this one image I cant put anywhere it just duplicates itself anytime I try then wont let me trash that one or the duplicate . Very annoying. very old photo pulled from Facebook years 10yrs ago.

I hope someone can help. NOT HIGH Sierra , but topic macOS Big Sur but im not an expert at all. I know very little about this. my Mac has been using Big Sure for a yr I believe. big mistake because I lost a ton of data after calling for help.

thanks Srayvon