I wrote about the originally Australian “no worries” — as a response to “thank you” or an apology — in the first year of this blog, 2011. Since then it has continued a sharp increase in popularity, especially in the U.S., which has outpaced British use, as this Ngram Viewer graph shows.
Apple’s iOS artificial intelligence has jumped on the bandwagon. For some time now, when I start to respond on my phone to an email, there are three options on the bottom of the screen for what to say. Here’s a screenshot of what appeared on my phone when I was about to respond to a friend who said he couldn’t play tennis because of an injury.
FYI, I chose “Ouch!”
notoneoffbritishisms.com 
Wait until it starts offering “No wuckers”. (short for ‘no wucking forries’).
Just wait for it to start offering “fair dinkum, mate”.
Fair dinkum, the old Lincolnshire dialect expression?
There’s also the related ‘no biggie’, which I believe is a rendered-down version of ‘no big deal’.
I vividly remember the first time I heard “no biggie.” It was from a college student in 1986. Green’s Dictionary of Slang lists the first citation as Frank and Moon Zappa’s “Valley Girl,” 1982: “It’ll be like really cool / Except my like my teeth are like too small / But NO BIGGIE.” https://greensdictofslang.com/entry/kgawi6a