Keep WiFi running when screen is off and phone is locked (streaming with black screen, battery saving, newpipe, podcasts)

How do I keep my WiFi running when my phone's screen is off and locked? Facts: 1. The biggest battery drain is my screen usage 1. WiFi uses your battery, but not nearly as badly as the screen 1. I use my phone to stream audio 1. I intentionally turn off my phone's screen to save my phone's battery 1. If I'm playing a local file that I previously downloaded, then I have no issues with the audio stopping when my screen is off. 1. If I'm streaming audio, then sometime after I turn off my phone's screen, the audio streaming stops (I guess after it locks and the the stream buffer is empty) 1. Immediately after I wake my screen, the audio stream resumes. Unlocking the phone is not necessary to resume the audio stream. I assume, therefore, that my phone is disabling my WiFi sometime after my handset's screen is turned off. I am running LineageOS 18 (Android 11). How do I prevent my android device from disabling my WiFi when the screen is off?