Try reading “The History of Mr. Polly”. I seem to remember H. G . Wells.
Also George and Weedon Grossmith’s. “History of a Nobody”.
I stand to be corrected on a couple of things there.
Viktoria.
Take into account that these novels were set & published late 19th-early 20thC.
There are clerks in Dickens' novels (mid 19thC), e.g. Bob Cratchit, Uriah Heap. There may be some clerk characters in novels set earlier in 19thC but none spring to mind.
Some members of one of my families were clerks and book keepers in Manchester and Preston, Lancashire, mid 19thC. They were 4 brothers, (born 1793-1803), who had previously had their own businesses, then for various reasons needed to earn wages. Their father was "gentleman" in 1830's poll books, having retired from his successful business. His widow and 2 unmarried daughters were of independent means on 1841 census. Another daughter married a doctor. One son was a clerk at the coal wharf, one book keeper at a brewery and one a solicitor's clerk.