Competition pokemon team

Hello trainers im just starting this game in a few days and looking for diffrent pokemon teams built on competition/competitive. Please lits yalls team with move set nature why yall pick that pokemon location of those pokemon and the items you have on them. So far i got an idea:

Rowlet
Riolu
Bagon
Magnamite

So any tips would be great! Thank you everyone and i look forward to all of the trainers suggestions! :)