Is there something wrong with my portfolio? No sales. (Video)

Just trying to figure out what I might be doing wrong here. https://www.pond5.com/artist/daybreakvisuals I've got about 90 clips up so far, been on here for about 4 months.

I understand that my portfolio is pretty small, but I've had 0 sales so far and I'm trying to sort this out. Is this normal? Are the categories that I'm not bought much? About how large does my portfolio need to get to get sales?

Thanks.

I have the same thing, about a year, there are views, no sales, the same portfolio is sold on other stocks.(

it's absolutely normal,you have only 90 clips over 19 millions....plus you have mostly nature and birds....oversaturated stuff that hardly sell....
try to shot something different,those days if you don't shot unique stuff is hard to sell even for contributors with thousands of files...