SkechersReggae Slim - Simply Stretch, Women's Sport Sandal

Re the sizing: some views say go up and some say go down. has anyone bought a size down in a regular width - and found the "length" to be too short?

I find elastic straps squasj my feet. Do they shape to your feet

Is a size 41 a 7 or 8 ?

Are these a slim/narrow fit or would they be suitable for a wider fit? Thanks