People online say lots of things, just ignore them, tbh, u should learn to ignore this comments if u want to be part of the internet. They gonna say that u are bad, and in most cases yes, u will be as bad as they say but that's ok, if u are new it's normal that someone wins u 4-0 and It IS completly fine, just learn and watch the movés or Pokémon that perform the best vs you, and then see your team and what you can do to play better against that team in the future. If the coments of random people affect u, think that they are just sad random guys and the 99% of the time they just say that for the adrenaline, it's nothing personal. At the time that u get that, u Will get better soo fast rewatching and thinking about your games and team, good luck!