Some employers are interviewing, some aren't. If offered an interview, take it. Learn how to interview well online and on the phone. This interview method will probably dominate future employment practices. (Wouldn't it be nice if this crisis did just the opposite, spinning a more inclusive environment, where people want to come together in community.)
A number of companies are filling the pipeline with good candidates that they can launch into employment down the road. Find a way to follow up with employers every few (3?) weeks - an email, brief call, short hand written note - to remind the employer that you're still interested. Look for ways to be remembered.
This is a good time to take an online course showing that you value continued learning. Find ways to be productive personally and professionally, so that you can interject into a future in-person interview, the contributions and achievements you made during this crisis. Use this time to standout.
I too feel isolated and am afraid. I've handled a lot in my life, some of it even life threatening, but never this. This is daunting, overwhelming, continuing. And yet I find ways to stay the course, finding my way through it. Focus on today. Do what you can. Practice self care. Keep the faith! We will come through this! Our best to you and your family.