Moths or beetles
We viewed your photos. The middle photo does not show an insect.
A common pest of fabrics is the carpet beetle. We are not suspecting clothes moths. The adult beetle does not do the damage. The larvae stage does the damage. Prevention is the best control. Dry cleaning will kill all stages of carpet beetles.
Hand washing with a mild soap for woolens should also kill the insects. Woolen articles should be cleaned and stored in sealed boxes. Soiled wool is especially attractive to them. Vacuum susceptible areas in your home often to prevent lint and hair from accumulating.
Here is our website with photos and management https://extension.umd.edu/hgic/topics/carpet-beetles