Fools are lucky (Am., Br.). Fools for luck (Br.). Fortune favo(u)rs fools (Am., Br.). God sends fortune to fools (Br.). The worse knave, the better luck (Br.). You don't need brains if you have luck (Am.)
Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.