Do Roman Catholics believe the Lord's Supper is a re-sacrifice of Christ and/or representation of Christ's death on the cross? Is the bread and wine/juice of communion literally transformed into the body and blood of Jesus?

What is the Catholic sacrament of Holy Eucharist? - https://www.gotquestions.org/Holy-Eucharist.html

Why is the real presence of Christ in the Lord’s Supper such a controversial issue? - https://www.gotquestions.org/real-presence.html

What is transubstantiation? - https://www.gotquestions.org/transubstantiation.html