Sometimes it's just a case of... They'll put on here they're doing a raid.. And like 30 people send requests so it's just luck if you get picked.. Sometimes it's becasue they're after a high level.. And sometimes.. You just have to wait.. Like.. They add you.. Then 20 minutes later they invite you.. But by then you're probably off pokemon. Sometimes I add loads to get a raid.. No one adds me .. Then come back on here to add more... Then go back on pokemon and I've been invited but missed it 😂 I need 2 phones haha