Which drill for the ceiling to hang lamps?

Hello forum community,

I hope I am in the right place here, otherwise please feel free to move this.
Today we tried to drill holes on the ground floor to hang lamps, but we can’t get further.
After a short distance it doesn’t go any further.
In the hallway, we tried at several spots until it worked at one spot.
We suspect there is a steel bar, and the one spot where we succeeded in drilling was a spot where we didn’t hit the steel bar.

Attached is a picture of our drill bits. Our suspicion:
- The silver bit is for stone and concrete
- The bits at the bottom are for wood.
- Are the bits at the top the right ones for metal, or would we need other ones for that?

Unfortunately, we can’t really make sense of the instructions on the internet.
That’s why we already misused the wood drill bit on the ceiling. It didn’t do well.

Can and should one even drill through a steel bar, or should we try to find a place where the stone drill bit can drill well?

I rather think you have a concrete ceiling. After a short distance there is no steel. What kind of drill did you use? Cordless screwdriver? For something like that, the best is to use a hammer drill and an appropriate drill bit.

Concrete drill, but you will probably need a hammer drill. Without the hammer function, you won't get anywhere. It's the same with our reinforced concrete ceiling.

Ok, and the middle drill bit in my picture is a concrete drill bit, right? We used it anyway. We used a drill with hammer function. We made sure that the hammer function (symbol with drill and small hammer) was turned on.

If it is a concrete ceiling, you use a rotary hammer with SDS-plus chuck if you need to drill more than a few holes. You can still hit reinforcement bars, but there are drill bits that can handle that a few times (4-cutter hammer drill bits of very good quality, e.g. from Hilti, Bosch expert). A hammer drill also works in a pinch with good masonry bits and a lot of force; that was how it was done in the past before rotary hammers became widespread. A rotary hammer generates the impact energy differently and requires hardly any force, a completely different world.

Get yourself a proper hammer drill as described by the previous poster. It goes through concrete and metal. Best to also rent the appropriate machine right away. Lamps belong where they make sense and not where you manage to get a hole in the ceiling with the wrong tool ;) I have a medium-sized Hilti because the whole house is made of reinforced concrete. I know the problem.