While looking for cheap coins, also take note of their established volume per day.

Relying on the price itself will just result into selecting shitcoins or those coins who aren't establishing a good volume and already closed on being a dead coin.

Go to big exchanges and choose altcoins that has a price range of at least below 100 sats. That's a good start. It's just an example. You can lowered that to 50 sats depending on your starting capital.