Privacy policy could be found here

"The collection of personal information by Presearch.org Global Limited. will be limited to what is necessary for the purposes which it identifies.

We will collect personal information by fair and lawful means.
Personal information will not be used or disclosed for purposes other than those for which it was collected, except with your consent or as required or permitted by law."
source https://presearch.org/privacy

I think google collect much more information than presearch