Looking on the internet deeply has found these results:

persist in my attempts is the most popular phrase on the web.

persist at my attempts 10 results on the web	persist in my attempts 130 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	99 Results ... 56, I expect a great deal from people, have difficulty taking no for an answer, and persist in my attempts to get what I want. If people don't eventually ... Aug 13, 2015 ... I persist in my attempts to understand the details, to which he shouts “Shut up and listen” with increasing decibels. When I say that the findings ... WOMEN SUFFER TOO. him. I had to persist in my attempts to get straightened out enough to be able to use the drinks I needed, without their turning on me. Jul 27, 2013 ... I have no alternative but to persist in my attempts to break in these vexing creatures. The humans brought the vessel to the port of Old Montreal ...

persist at my attempts

10 results on the web

persist in my attempts

130 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

99 Results ... 56, I expect a great deal from people, have difficulty taking no for an answer, and persist in my attempts to get what I want. If people don't eventually ...
Aug 13, 2015 ... I persist in my attempts to understand the details, to which he shouts “Shut up and listen” with increasing decibels. When I say that the findings ...
WOMEN SUFFER TOO. him. I had to persist in my attempts to get straightened out enough to be able to use the drinks I needed, without their turning on me.
Jul 27, 2013 ... I have no alternative but to persist in my attempts to break in these vexing creatures. The humans brought the vessel to the port of Old Montreal ...