Android emulator doesn't start

[Sucharek]

Hi, so I can't seem to start an emulator.
I've tried arm64-v8a, but from what I've read, my PC can't handle that, and when I try an older version (armeabi-v7a), it fails...
Error message for armeabi-v7a:

ERROR   | This AVD's configuration is missing a kernel file! Please ensure the file "kernel-ranchu" is in the same location as your system image.
ERROR   | ANDROID_SDK_ROOT is undefined
INFO    | Android emulator version 30.9.5.0 (build_id 7820599) (CL:N/A)