YOU SAID:

when they decided they would try to make it on their own

INTO JAPANESE

自分で作るしようと決めたとき

BACK INTO ENGLISH

When decided to try and make yourself

INTO JAPANESE

しようと自分自身をすることを決めたとき

BACK INTO ENGLISH

When I decided to try myself

INTO JAPANESE

自分自身をしようとすることを決めたとき

BACK INTO ENGLISH

When I decided to try myself