azure ad b2c after azure b2c logout when log back in it uses same account code example
Example: azure b2c logout url
// IONIC/Angular/Capacitor
https://${environment.tenantName}.b2clogin.com/tfp/${environment.tenantName}.onmicrosoft.com/${environment.signInPolicy}/oauth2/v2.0/logout?client_id=${environment.clientID}&response_type=token&redirect_uri=${environment.redirectUrl}&scope=openid%20offline_access%20https://XXXX.onmicrosoft.com/api/demo.read