Garden office - fiber optic or Ethernet? - eviltoast

Hi everyone

I have very little knowledge in this space.

I’m setting up a garden office and need fast internet speeds.

My plan is to run a cable between a router in the house and the garden shed. Overall the distance is 26 meters.

I can’t use the power lines because they are coming from a different box, separate to the house.

Any general advice would be appreciated but I’m specifically interested to know if a fiber optic cable would be better than a Ethernet cable?

If so, how would you connect the fiber optic cable to the house router/wifi point in the garden shed? (i can see that the connector is different but I have no idea how to resolve it. Both the router and shed WiFi point has Ethernet connections)

Many thanks

Phil