>>531385282
play the game till you cap the monthly amount (counts all sources) and only then buy the extra ones from the medal shop
no other ways to earn more iirc
that's 5k + 3k extras netting you two bullins per month
you get one more from the pass every two months
if you're building from the regular banner you get a UR ticket for certain botes you can use instead
point accumulation events usually have a UR bullin halfway through
if you are really new, the last of the rookie missions has a free Shinano/NJ
as you might have noticed these are not something you farm, rather, you save up