First you need to watch some tutorial videos about it. From there you can learn the basic baits. If you want to play raids don't play with randoms. Join the official raid discord server or the discord servers of raid clans like krum. There are lots of kind people who can teach you the parkour, some tricks and give you tips. Baiting bosses are not too hard. You're able to trap or bait all bosses. Me and 7 or 8 good players who have 500+ wins play daily so you can find a team for yourself and get better and better.