that 1. Sola Scriptura aka "Bible Alone" is self-contradictory. It isn't in the bible, of course, among other things.
The bible tells us to hold to the Traditions, both written and verbal.
2. There is a biblical basis for most of those, but "worship of Mary" is actually prohibited by the Church. I won't go into the theology much, but "worship" is reserved for God alone, Mary is a creature created by God, albeit the highest creature created. The Latin term for worship is latria. Dulia would be the Latin term for honor or devotion, which we give to saints. Hyperdulia, or the highest form of honor and devotion for creatures is reserved to the Blessed Virgin, Mary.
https://www.newadvent.org/cathen/05188b.htm
The word "pope" is just Italian, I believe, for "papa". Many of the past popes were Italian and it was a term of endearment many used and it caught on. Purgatory, infant baptism and praying to the saints in heaven are a part of Tradition and also have a biblical basis for those beliefs.