It may be a good idea to reach out to the professor you were going to work with to see if there's any work you can do virtually. I work as a research assistant under two different professors, and while the universities have closed down, there obviously wasn't any in-person work we could do. I emailed both to see if there was any work that could be done at home, and have been completing some tasks here and there that can be done virtually. Of course, your professor may not have anything for you to do online, but it's always a possibility.
Getting some clinical experience is always a good idea, and so if you have the option to get a job in a clinical setting (and you're comfortable doing the work during the pandemic) I'd say go for it! Some experience is better than no experience in my mind, and I'm sure admissions and future PIs will be more understanding of the fact that you weren't able to gain research experience due to the pandemic. It was out of your control. Work on strengthening the rest of your application as well!
Good luck!!