I am a 7.5 and always size up 1/2 or to the next whole size in slides like these
double strap braided sandal with chain (color woven metal nude): https://amzn.to/2S1YpPd
black jelly sandals with bow: https://amzn.to/3q2AKej
khaki braided sandal: https://amzn.to/3iMzpGB
black braided sandal: https://amzn.to/3gtQOSW
crisscross sandal with chain (fit wider)(color: cross nude): https://amzn.to/3xpWi6W
white slide with chunky chain (fit wider): https://amzn.to/2SEiBag
