Actually for Rising Star, it starts off slow but you don't need to put anything into the game. In fact there is a ton of giveaways going on to get cards to unlock more missions and the most recent post with the list of giveaways can be found here. In fact that link updates daily and they generally link it in game as well.
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Thank you so much for pointing me in the right direction!
I’ll be checking the link shortly!
Much appreciated!