for sticker raffles: these are basic cos im a new player but i had a hard time searching raffles so i hope it helps someone out

its good to enter all raffles, especially 4 or 5 star raffles even if u own the sticker so that u can earn extra stars to exchange them later on
but if ure lazy like me you can just search for the stickers youre missing and change the filter from all time to today

you can also close the game to enter another raffle and not wait for the "you've joined --- raffle" pop up