Are the 3 Persons of the Trinity dependent on each other?

So I'm recently trying to reconnect with my faith and I stumbled across the doctrine of the Trinity, and so a question came across my mind especially after I got into a debate with a muslim friend They say that if the Persons of God are independent of each other than we would have Jesus who is God, The Father who is God and the Holy Spirit who is God, thus 3 Gods in their opinion. If they are dependent, then they aren't God because God doesn't need anything outside of him. Sorry for any mistake and may God bless us all.