Please find a link showing such proof, thank you.
Do you know what a genetic sequencing is?
Here's a site with a data base of 2.8M SARS CoV-2 sequencing runs. Each required an isolated sample.
Here's the NIH's site with a database of over 900K sequences.
It's undoubtedly the most sequenced virus in history.
This notion that with today's technology we can't isolate a virus sample is pure, gleeful ignorance.
It would be laughable, but the reality is it's evil because they're using misinformation to prevent people from geting treatments that could save their lives.