NO, first, the Church does not teach that certain people have more than one guardian angel. Private revelations are just that. Private, and we are not bound to believe them.
Second, we should all strive to be close to our Guardian angels, confiding in them praying to the,m asking for their protection, and thanking them for every single scrape we get out of.
They are not to be feared. They are beautiful and loving, and given to us as a precious gift of Our Lord. With your guardian angel, you are never alone. Never without hope, never without help.
Our angels are with us in all occasions, good and bad. They rejoice when we do well.
They are BENEVOLENT beings, not taskmasters. If you should be so blessed to actually encounter your angel in person, the first thing an angel always says is “Be Not Afraid”. That’s actually how you definitively know you are dealing with an angel.
There are other ranks/choirs of angels that are said to be warriors and more geared to other tasks. But the Guardian Angels are specifically created to care of humans.
Never fear them. Love them, and thank them. They will be with you in paradise.
God bless.