In this video show how to publish app/game from unity to google console internal test and show how i fix problem invalid certificate and duplicate com name
for who find how to fix cert invalid go 04:04
here command gen keytools
{PATH OF YOUR Folder}\jdk-20\bin\keytool.exe -genkeypair -v -keystore myunitykeystore.keystore -alias mykeyalias -keyalg RSA -keysize 2048 -validity 500000
alias = name of you alias you will select it in unity after gen
validity = date of this key will expire