Im doin the main quest and im on the quests blood of the divines and aid for bruma the wiki says aid for bruma is optional i dont like doin oblivion gates but im tryin to beat MQ in next 2 weeks,
how crucial is getting help for bruma

It's not necessary, but it helps to keep Martin alive before the gate opens, but he usually handles himself pretty well. Do you want Jauffre and Baurus to survive? If so, I recommend getting 2 or 3 cities help.

baurus somehow died during the mythic dawn quest under imperial city is that bad