YOU SAID:

we used to go to the beach on various weekends

INTO JAPANESE

私たちは週末になるといつもビーチに行っていました

BACK INTO ENGLISH

We used to go to the beach every weekend

INTO JAPANESE

私たちは毎週末、海に行っていた

BACK INTO ENGLISH

we went to the beach every weekend

INTO JAPANESE

私たちは毎週末ビーチに行きました

BACK INTO ENGLISH

we went to the beach every weekend