I have done very well on Serpclix and it is my best earning site. I started here March 2020 and to date have earned $160 which I think is a good amount. I found that the longer I stay there the more orders I get. The only drawback is sometimes there are links that cannot be found so you cannot earn from those orders although since I have been there I am more experienced in finding out where they can be found.
They are very strict about their rules and you cannot share any of the urls shown on the site. Some people got their accounts deleted for sharing information on Reddit. You also have to use either Firefox or Microsoft Edge browsers or the add on will not work but easy money and well worth a try.