Make money with clickbank

Hello, i want to sharing my method, i know it's pretty easy but i can't make huge money to using this method. my best month got 14 sales and i earned $37*14=$518 a month.

1st i hired a people from fiver, i paid $30 for create a product review video.
then upload on youtube.
then share my video link on similar video with valuable comment (not spamming)
and got sales

but now days that method works not so good, i got only 1 sale this month but hope will works again.

if anyone have better suggestion then please let me know. thanks

[i am intersted

the tube channel tht u use it to comment below hve a huge views number???