Husband’s high standards

During covid, my husband still wanted me to look for swim lessons for my 7-year-old. I found a few places, but they were closed or full due to limited hours/capacity. My husband gets angry at me that I am not capable of finding a place. How do I respond to his accusations? I understand he doesn’t give up without trying but I have looked at many places nearby and there are none available. When I say so, he is angry and disappointed that ‘you can’t do simple things.’ How do I reply to let him understand so the tension doesn’t flow into the rest of the atmosphere? He himself doesn’t have the time to do it.