And for the record breaking cold temperatures in Texas and Oklahoma in 2021?

No, they haven't officially. OKC's highest high was 113 on August 11, 1936 and August 3, 2012. LA's official hottest temp. was also 113 in 2010.

https://www.nbcnews.com/news/weather/portland-soared-116-degrees-hotter-dallas-miami-la-have-ever-n1272617


I stand corrected. Although Woodland Hills might as well be LA.

And for the record breaking cold temperatures in Texas and Oklahoma in 2021?

A warming Arctic puts a lot of pressure on the jet stream and causes anomalies on both ends of the spectrum. That cold snap was also a result of climate change, and we can also expect more of those in the future. https://www.cbsnews.com/news/climate-change-texas-winter-storms-arctic-cold/