Are there any accounts of sword fights? I have googled it to no avail, I have always been more interested in the human side of history, as in what was it like for the bystanders? How skilled were tbe participants etc.

There are many accounts of varying levels of detail. Sword fighting in the British isles became a popular pastime in the 18th century, with Stage Gladiators fighting with sharp steel swords to entertain the crowd.

This article mentions Samuel Papys watching a demonstration. https://worldbroadswordchampionship.wordpress.com/2017/01/31/a-brief-history-of-the-world-broadsword-championship/

I cannot find the account right now, but there is a detailed account of a local champion dueling on stage with a traveller, with specific techniques described. In the case of this one, it mentions the practise of "slipping the leg" to avoid people cutting at it. Standing with a back-weighted stance, some fencers would pull their front leg back and away from an incoming blow to protect it.

In modern times, people often examine these accounts to try and reconstruct the styles of the time.

But to get back to the point, yes there are written accounts, albeit not many online.

Swordsmen of the British Empire by D.A Kinsley is a book with a large collection of these focused on accounts from fighting within the British Isles and wherever the Empire went to describe how officers and some other soldiers ended up using their swords and what we can takeaway from these accounts.

One point that stands out to me right now is how British swordsmanship uses thrusts or "the point" much more than the Indian counterparts, due to differences in traditions and construction of the swords.