I'm not an expert in lottery, but I think the principle of online lotto is the same as before, you have to buy a bid and wait for the results of the draw. However, there are lotto games where you yourself can write any numbers and if they sniff with a winning combination, then you win big money. The lottery also provides incentive prizes for participants who have a partial coincidence of the numbers on their lottery tickets or, as in the case of the instant lotto, you will simply find on your ticket information about which prize you will receive. I found on the Internet a more detailed tutorial on how to play Lotto in Nigeria, I think that the principle of all online lotto doesn't differ dramatically, so here you will find the information you need.
https://lottonigeria.com/lotto-nigeria