lose heart
US /luːz hɑːrt/
UK /luːz hɑːrt/

1.
perdre courage, se décourager
to become discouraged or to give up hope
:
•
Don't lose heart, you're almost there!
Ne perds pas courage, tu y es presque !
•
After several rejections, she started to lose heart.
Après plusieurs refus, elle a commencé à perdre courage.