first step:
jdk installation
just press download:
https://adoptopenjdk.net/index.html?variant=openjdk8&jvmVariant=hotspot
and go through installation
step 2:
if you have android sdk update it there are tutorials and if you dont have it download it and go through installation steps
step 3:
copy this into cmd
keytool -keyalg RSA -genkeypair -alias androiddebugkey -keypass android -keystore debug.keystore -storepass android -dname "CN=Android Debug,O=Android,C=US" -validity 9999 -deststoretype pkcs12
step 4:
go to editor settings/android
abd: C:/Users/ your user name /AppData/Local/Android/Sdk/platform-tools/adb.exe
jdk: C:/Program Files/AdoptOpenJDK/jdk-8.0.275.1-hotspot/bin/jarsigner.exe
debug keystore: C:/Users/ your user name /debug.keystore
debug user: androiddebugkey
debug pass: android
and yayyyy your done!!!