Hello Henry, I cant seems to understand how is this chartbet game

It seems like when I didnt buy the "stocks" or whatever it is called, it seems the chart is being stagnan, and when i have buy it, the tendency of falling is greater than rise, it can be falling for almost entire my bankroll ( which is the free balance ) does this means that if i have a btc in my bankroll and the chart keep on falling will my 1 btc be consumed in the end?