In this age of lockdown, there are a lot of bands doing online concerts. Though you need to buy a ticket for some, some bands are doing theirs for free and hoping for donations.
One of my favorite bands is Disillusion, and they did a free concert a couple of weeks ago and have also released it on YouTube:
I have also purchased tickets to another show (Insomnium/Omnium Gatherum) and am looking forward to buying more if I hear of more bands I am interested in.
Check in on artist you like and see if they are doing the same. If you can afford it kick them some cash – either through Patreon or other channels (buy some of their music on Bandcamp or merchandise).
With everything closed down, we still need to support the arts if we can.