Think those hooks are too small for big fish....1 cm = approx 3/8”.....and not convinced they’re fish hooks.
Skepticism is good. One could imagine or make a case they were used for adornment, as in a necklace. Probably drove randy cavemen wild.
No, I’m not buying it either. No holes or ridges for the line to go through or wrap around. Not pointed enough to grab a fish, either. Possibly earrings or nose rings - same principle used today.