It's just me or nobody ever ask why she get a place to stay in a town filled with racist, that had slavers as somebody pick up trash and any random food stall has mentally retarded guys that don't want to sell food if you aren't human
From chapter 2.1, page 18.
First, lets head to an Inn. Most likely, inns are safe zones in the game mechanics, unaffected by outside interference...
We also don't yet KNOW it's a racist town. It could be that outsiders/non-humans bring trouble, if only because they get targeted by thugs and slavers (who might not hesitate to harm anyone in the way). Especially if it's a bordertown with lax laws. People can turn a blind eye to a lot of horrible things to keep themselves safe.
Or maybe they have a reason to be prejudiced to non-humans, like "the evil-elf empire teamed up with the evil-beastman tribes and attacked the human kingdom 100 years ago" or something. That said, it's an isekai fantasy series, so shallow mono-culture races are the norm, and humans not liking non-humans is just how it is.
The above is just a long-winded way of saying "I'm going to wait and see where this goes before making a judgement on what the people of this world (or at least in this region) are actually like".
Also remember that our MC was thrown off the high elves floating island because she had the wrong coloured eyes and hair. People being terrible seems to be a bit of a theme so far.