There is this story about moving 80 ton statue, even this wasn’t a small task for modern people.
https://www.lonelyplanet.com/news/ramses-ii-grand-egyptian-m...
Unfinished Obelisk is 1500 tons but it’s still in the quarry, I wonder how they planned to even lift it up
A quick look around I found this site: http://www.catchpenny.org/movebig.html that suggests ways it was moved.
Quick TLDR. They don't lift it, they dig under it. Either constructing a canal, and putting a weighted barge beneath it. Then remove the ballast so the barge lifts up the weight. For overland they do a similar thing, but with a sled, pour a lubricant under the sliders, and then pull. Apparently 2 people can pull 1 Ton this way. So 500 people pulling the sled. (They had approx 2000 people working on a similar project) Also they used shallow ramps over long distances to raise it up.
There was also a modern thing when they moved a lighthouse.
The 80 ton statue was difficult because they wanted to do it with minimal people, and with minimal disruption, and quickly. If you had 2000 people working 5 days a week, 3 years to do it in, and the legal ability to dig up the road/canal etc it can be done. The amazing thing to me is how much priority Ancient Egyptians gave building these monuments, seems like the most important thing they were doing. I guess it gets easier to deal with planning permission when your absolute ruler says "Do it".
I imagine if we were consuming news from India, Egypt or Nigeria it would be a very different story.