It’s these things. Notice how the thread is smaller than the shaft. You always need to drill a pilot hole, otherwise the thread won’t bite into the wood. The thread is also pretty tight, so screwing it two-three times in the same hole is enough to strip the wood in the hole, so it can be pulled out with tweezers with almost no resistance. It’s also slotted, so if you press too hard your screwdriver will slip out. And if you screw too tightly, the head will rip off, because it’s a mild steel.
It’s these things. Notice how the thread is smaller than the shaft. You always need to drill a pilot hole, otherwise the thread won’t bite into the wood. The thread is also pretty tight, so screwing it two-three times in the same hole is enough to strip the wood in the hole, so it can be pulled out with tweezers with almost no resistance. It’s also slotted, so if you press too hard your screwdriver will slip out. And if you screw too tightly, the head will rip off, because it’s a mild steel.
Or you just hammer it in.