Performance rating calculation

so recently,  20 days ago I participated in a tournament where I got a 28.5/29 score against players of these ratings, but I can't find a way to calculate the performance rating, please help. 1228, 1579, 1086, 962, 2032, 1317, 883, 1361, 1450, 792, 2179, 1745, 813, 1661, 1027, 1256, 1028, 1190, 1810, 647, 669, 1480, 1363, 1885, 631, 1553, 700, 1440, 1748, in chess

I tried to ask chatgpt but it told me 850, how does a 850 rated beat so much good players

https://www.hirmulintu.fi/juha/chess/en/performance_calculator.shtml

I double-checked on another site and the same result came out. On the link above you'll find some explanations to understand the difference between performance rating and FIDE performance rating.

woah thank you bro

I drew with FM Sherlock Holmes rated 2000 here

thank you jack

if I didn't count the draw then my performance rating would be infinity

should I call Kramneek to play?

1487

1487 can get 28.5/29 against 1800 average rating opponent?