Sometimes wearing inside out helps if seams are the problem.
I get plain cheap white ones from asda
Mine does this and it nor.ally has nothing to do woth the socks. She may be tired / hungry/ had an exciting week.... and for some reason everything gets projected on the clothes
Primark have always done good, cheap socks for kids with no pattern
I’d just get normal white socks. They don’t really have any bits on the inside and it’s easy if you lose one