>>716483161farm as much money as possible and visit as much shops as possible (never skip) to get to see as much jokers as possible.
also, planet cards are basically mini jokers so even if you don't get a scoring joker right away, keep lvling up hands to help you get by while you build your economy engine. until around ante 6 your sole focus should be getting money (gold cards over steel cards, lucky cards over glass cards, etc. play throwaway hands instead of finishing the blind if you are yet to draw your gold/lucky cards from your deck) and spending it on scoring sources only when neccessary. keep track of how much your average hand is scoring so you know whether you need more scoring or not for the next blind.
pairs is the most consistent hand in terms of scoring and ease of playing, so you should go for it unless circumstance forces you to pivot to a better alternative (no mercury planets in sight or picking up shortcut).
don't be afraid of picking up something like an eternal lusty joker in your first buffon pack. even if you don't end up building your run around it, it will carry you through the early game and you absolutely don't need all of your slots to be maximum score output. planet cards and 2-3 good jokers is usually more than enough to beat ante 8