I worked as a VA for three years and know a few great VA's that I can refer. I recommend finding a freelancer over hiring an agency because most of the money goes to the agency and they provide very little support to the person working in your business. Hiring internationally is a popular choice but can be very exploitative so if possible try to hire someone that sets their own rates.
If you have any questions I am happy to answer if I can I am also sharing a link to a guide I created in regards to hiring freelancers if you want to check it out.
Freelancer Hiring Guide