>>531499881. Pay reparations to America for oppressing us for 7 years
2. Copy a professional player's team
3. Practice with it for hundreds of rounds until you understand the ins and outs of the team
4. Review your team periodically to replace the least effective team members
5. Attend local tournaments
6. Make YouTube videos about it
Or, the more simple way than just doing competitive:
1. Pay reparations to America for oppressing us for 7 years
2. Get a good microphone
3. Learn how to edit videos
4. Put together an interesting video discussing Pokemon lore/gameplay/music/art/etc