This is a known issue already, and the majority of them are new exchanges that create fake volume to attract traders. There should a strict regulation that would prevent them from fabricating such volumes. I really don't think this can be resolved anytime soon, but staying away from these kinds of exchanges would be the way to go. Perhaps, stick with Binance, or Coinbase and a few other trusted ones.
even so called big exchangers are having fake volumes. Bitfinex, Kraken. Most of them, are not financial licensed...