The best advice for “knife fighting” is run away or if you can’t, use a chair or broom handle to create space between you and the knife holder.
Spoken like an imprisoned infant who's never won a knife fight.
The actual best way to win a knife fight is to first lock your Surface (can't let just anyone use it to kill fascists). Next, you finish your IPA, minding that you don't spill any into your big fat tit cleavage because that's uncomfortable. Then you arise from your barstool and loudly announce that you need someone to call the police and the paramedics.
The following steps may happen so quickly as to be a blur, probably because they can't be fully understood or witnessed by the uninitiated. Your attacker will advance towards you, knife in hand. Or not. Doesn't matter, as it all ends the same way. That said, err on the side of caution and count it as being attacked with a knife. Your attacker may also do something
very illegal such as lying about the fact you've put on weight or haven't had a new book published in years. Then, so quickly as to be considered immediate, you will flip the attacker on to their stomach, sitting on them to immobilize them. How? Don't know!
After that it's mere
stalkerchild's play to keep them immobile under the weight of such alpha manliness that you can lisp-wheeze a stream of spittle-laced facts into their ear: facts about how their life is already over, this is the end they chose, you have such available access to your wife's poon that you could have some right now if you wanted to, or that they clearly weren't prepared for what was coming*, just as you told them they wouldn't be.
The final step is dismounting as the police arrive to take the barely-alive-multiple-felony-committer into custody. There may be a greasy stain on their clothing from where certain regions of your anatomy were contacting their body. Disregard that as it's only natural for someone who doesn't wear underwear, doing the hard, sweaty work of winning
yet another knife fight. Also disregard the bald manlet with the English accent leaping on to the attacker, sniffing the spot like a drug-sniffing dog, talking about, "'at's a roight lovely perfoom, 'at is. Bloody bullocks, mates, me willy is loike a diamond! I ain't got the loicense for this!"
Be sure to dawn your best AGP smirk and gloat as another fight is won, another stalker is clinically dealt with, and your reputation as an Actual Tough Guy is maintained. Unlock the Surface, get back on X, order another of the cheapest IPA the bar has, and get right back to correcTing the recorD.
That is the best advice for how to handle a knife fight.
*-hint: think "faucet"