If you want to sign up to do a challenge run with others, check out the
Challenges forum! All the challenges listed on the main page there are challenges people are doing with others, so you can sign up yourself and post your progress as you go. There's also the
Discord chat where you can talk live with other community members, they often discuss Pokémon so it's worth it to stop by!
Otherwise you can also post a
blog entry since you have 5+ posts to look for more people to play with... should be more than enough options.
Good luck. [: Gonna close this up since Main Street: Meet & Greet is for introductions/reintroductions/leaves. Feel free to message me if you have more questions though.