The problem, though, is that one of the Popes bought a lot of those treasure you see in the Vatican with money from the indulgences. It’s nice we have those antiquities but the way they were purchases was really pathetic and definitely not Christlike.
Do you have any source documents showing what Pope supposedly spent money donated via indulgences on treasures? Most of the abuses in the “selling” of indulgences were done by rogue confessors, and the legitimate indulgences weren’t sold by the Church, but a monetary donation was required as part of the penance - that money was used to build Churches, Hosptials, etc. I can go dig up the info if you’d like!