Beating Arlo in Pokémon GO during April 2023 is quite easy if players build a proper team to counter his possible lineup. Arlo is one of the three Team GO Rocket Leaders that can be encountered in the popular mobile game with a Rocket Radar, along with Cliff and Sierra. Much like the Team GO Rocket Boss, Giovanni himself, their team lineups change frequently, so a team a player used to take him down in January, for example, may no longer be viable to counter his chosen Pokémon this month.
https://screenrant.com/pokemon-go-arlo-april-2023-team-best-counters/