The most evil act in the world was the killing of Christ on the Cross- God’s only Son.
This is an example (I could name more) of God allowing evil to take place .The perpetrators meant it for evil but God meant it for good.
The intention of God to fulfill His purposes is clearly seen in Christ dying on the Cross. His Glory is shown by His love for anyone repenting and putting their faith in the only mediator between God and Man- Jesus Christ.
Trying to claim because evil exists ,God is not “loving” is wrong.
God has sufficient reason for evil to exist but isn’t the author of evil ,His appearance in Time and love for Mankind is clearly seen in giving us the unbelievable gift of Grace to anyone who will repent and put their faith in JesusChrist.