Missing worshipping Mary( called veneration by Catholics), bowing before idols( statues ) , believing the lie of an infallible pope, bribing God to get out of a fake place called purgatory, calling anyone but God Father no thanks.
Basically none of those things are Catholic, so you're not missing any of those things by not being Catholic.
What you are missing, is the Real Presence of Christ in the Eucharist.
"...where two or three are gathered together in my name, there am I in the midst of them", "...the Lord Jesus the same night in which he was betrayed
took bread: And when he had given thanks ("Eucharist"),
he brake it, and said, Take, eat: this is my body", "...he was known of them in
breaking of bread...", "They devoted themselves to the apostles’ teaching and to the fellowship, to the
breaking of bread and to prayer", and, "...the first day of the week, when the disciples came together to
break bread...."