Simplify the following text for a Grade 9 native English-speaking person.
Original: His and Fianna FÃ il 's popularity was short-lived , however ; his government introduced severe , deflationary budgetary and economic policies in 1952 , causing a political backlash that cost Fianna FÃ il several seats in the DÃ il in by-elections of 1953 and early 1954 . Faced with a likely loss of confidence in the DÃ il , de Valera instead called an election in May , 1954 , in which Fianna FÃ il was defeated and a Second Inter-Party Government was formed with Costello again as Taoiseach .
Simplified: Fianna FÃ il was defeated again in the 1954 general election , but in 1957 de Valera , won a majority of nine seats .