This is the 6555th most frequent Portuguese word.
estragar
To ruin, to spoil, or to damage.
Here, 'estragar' is used to mean 'spoil' or 'ruin' in the context of making something less enjoyable or unfit for its intended use, specifically referring to the cake.
Eu estraguei o bolo ao adiciona açúcar demais.
I spoiled the cake by adding too much sugar.
In this sentence, 'estragar' conveys 'ruin' or 'damage' caused by external factors, applied to the condition of a physical object—the umbrella.
O forte vento acabou estragando meu guarda-chuva.
The strong wind ended up ruining my umbrella.
Here, 'estragar' is applied in a more abstract sense, implying 'spoil' or 'interrupt,' making a situation less enjoyable due to an action—interrupting.