Yes, do not buy any coins, if your education not allows you to understand how POS works. Perhaps, it is better to die out and do not write anything anywhere.

But for take POS reward, your wallet must create block with having coin (utxo) and this block must be included to main blockchain branch. Chance to do this determines by coin age and coin size. If one of these multipliers is too small, resulting production will be small too.

Conclusion: wait or buy more coins or die.
Cheers