не рискуй

don't take risks

→ не
phrase Uncommon #22,799
don't take risks Informal singular command; the object being risked may be clear from context.
RU: Не рискуй без необходимости.
EN: Don't take risks unnecessarily.

Не рискуй этим.

Don't risk it.

Не рискуй понапрасну.

Don't take unnecessary risks.

— Охота за «Красным Октябрем» (1990)