I’m just wondering if it’s guaranteed that there will always be a Pope. Sorry if this is the wrong section, I wasn’t really sure where to put this.
Short answer: YES.
The Church has the personal guarantee from Jesus Himself to stay with us until the end of the world.
The visible head of the Church, the Pope is a necessary part of the Church. The visible head of the Church until Jesus comes back.
Logically there is always time between the former pope and the next in which there is no one in the position.
But as long as the church is on earth, there is always going to be a next.