What is the best all-around lens for Canon EOS R6 travel because I am totally overwhelmed and honestly kind of panicking about my trip. I bought this camera because everyone said it was amazing but now I realize it doesnt even come with the glass part on the front and there are like a million options and I have no clue what the numbers mean.

Im going to Italy and Switzerland next month for two weeks and I really dont want to be that person fumbling with a bag full of gear while my husband is trying to walk around. I just want one lens that can do everything like taking pictures of the mountains and also some food and maybe us in front of buildings. Is that even possible? I keep seeing people talk about prime lenses but then someone else said I need a zoom and my head is spinning.

My budget is around 1000 dollars maybe 1200 if it makes a huge difference but I really dont want it to be super heavy because we are going to be walking a lot. I saw one that says 24-105 but then there are two versions and one is way more expensive and I dont know why? Sorry if this is a really stupid question I just dont want to waste money on the wrong thing and then have blurry photos of the Alps...