higher or lower? analyse step by step

i want to be honest with you.
nobody cant predict price path before some prices are seen so if 0.83813 and 0.84470 will seen in this week , price will move to higher levels like 0.84869 and we can set our Strategy to buy.
if the price can not reach to the 0.83813 we have bearish trend and we can set our Strategy to sell