(because the last one was private)
Check out my extension RandomUA, which randomizes your User-Agent header for each request in a way that preserves compatibility but really mucks up tracking.
Learn more at https://leotindall.com/randomua/
Please boost and send me comments on what features you'd like to see!
@tindall usually buying stuff can be retried. But stuff like booking a seat going somewhere and there are limited seats and absolute rush to get preferred seat, there are no second chances if the browser can't send through the data to the pg reliably. So it's not a very happy thing nor is it ever taken lightly.