This is the 679th most frequent Armenian word.
պարտվել
To lose.
In this sentence, 'պարտվեցի' (I lost) is used to denote being defeated or not winning in a game or competition.
Մենք խաղում էինք շախմատ, բայց ես պարտվեցի։
We were playing chess, but I lost.
Here, 'պարտվեց' (failed) is used metaphorically to express struggling or not succeeding in achieving a goal due to negative factors.
Նա համարյա պարտվեց քննության ժամանակ հուզմունքի պատճառով։
She almost failed during the exam due to nervousness.
In this usage, 'պարտվեց' (lost) describes a situation where the person did not win or was overtaken in a competitive setting.