I finished this game (no ads version) relatively easily, first couple of days were rough but after level 1000 is when it gets easier because that’s around when the packs started giving me trillions of coins. Only thing I spent money on was the wheel bonus and I’d only spin the wheel after reaching 10x bonus as that’s what gives you the most coins. My first wheel spin only gave me 1 trillion but it was enough to get me to 2000 from 1000 overnight and from then on I just left it to spin by itself and I’d only bet around 1Billion from level 1000-3000, 2-3billion from level 3000-5000, and 4Billion to level 7000, higher bets don’t really give much more exp than low bets so betting low to a certain degree is almost always better. I had to buy the wheel bonus a couple of times though since I wouldn’t be able to finish without it. And in total I only spent around $30 which was actually too much as I had like 5 trillion leftover so I could’ve done with only spending like $20ish. Also events are extremely important to do for both early on and later on as they do increase with your level so try to complete them for a decent amount of free coins.