Earlier I could safely trade on the best exchanges from the coinmarketcup rating. But now there are a lot of restrictions and big  exchanges have become much more dangerous than small exchanges. I had to look for a new exchange. Problem was that on almost all small exchanges, the spread in trading pairs is very high and this would take most of my profit. Until I found on Bityx and here on all pairs the same spread as on OKX or Huobi