what is the problem? today, i have the same traffic as previous days, but there are no clicks even one. How about you? Is it normal for you?
Yes, swings in clicks from day to day are very normal. The less traffic, the more you are likely to see it. I see swings with sites that get 1000+ clicks a day - and only pay attention to weekly trends.
It is the uncertainty that motivates people to continually try and gain more organic traffic to cover for these fluctuations in visitor behaviour. The hope is that it balances out and over longer periods remains relatively consistent.
I got also daily differences but on weekly or monthly stats it can be HUGE differences! This is not a problem, it all depends on traffic.