an·ec·do·tal
ˌanəkˈdōdl/
adjective
(of an account) not necessarily true or reliable, because based on personal accounts rather than facts or research.
"while there was much anecdotal evidence there was little hard fact"
characterized by or fond of telling anecdotes.
"her book is anecdotal and chatty"
(of a painting) depicting small narrative incidents.
"nineteenth-century French anecdotal paintings"