You’re not going to find a thread strong enough to pull a few tonnes of stone, but you can easily pull it with a large number of ropes pulled by a few hundred people.
Similarly, a single 8x8 beam as a lever arm would just snap, but a dozen 8x8 beams as lever arms for a dozen levers probably wouldn’t.
Now find sticks or stick assembly strong enough to lift a few tones of stone without breaking at the rotation center
Stick assembly is the key thing.
You’re not going to find a thread strong enough to pull a few tonnes of stone, but you can easily pull it with a large number of ropes pulled by a few hundred people.
Similarly, a single 8x8 beam as a lever arm would just snap, but a dozen 8x8 beams as lever arms for a dozen levers probably wouldn’t.