When Jack was 3, he (wasn't able to / didn't managed to) ride a bike.
wasn't able to
Were you able to repair Tim’s laptop? (manage)
Did you manage to repair Tim's laptop?
There was so much food that they couldn't finish it.
There was so much food that they were not able finish it.
(Did you managed to / Could you) buy a birthday card for Dad yesterday?
Did you managed to
I failed to find a mobile charger anywhere in the house. (succeed)
I didn’t succeed in finding a mobile charger anywhere in the house.
Could you swim when you were 4?
Were you able to swim when you were 4?
I only learned to ride a bike when I was twelve years old. (couldn’t)
I couldn’t ride a bike until I was twelve years old.
I'm sorry but I wasn't able to get tickets for the concert.
I'm sorry but I didn't manage to get tickets for the concert.
(Were you able to / Did you manage to) play the piano when you were at elementary school?
Were you able
Tickets to the game were impossible to get. (able)
We weren’t able to get tickets for the game.
My brother was able to play soccer when he was 3.
My brother could play soccer when he was 3.
After the skiing accident, Eva (didn't manage to / couldn't) play tennis anymore.
couldn't
We finally managed to connect to the wi-fi. (succeeded)
We finally succeeded in connecting to the wi-fi.
I got up really late but I still (could/managed) to get to school on time
managed
I was pretty good at speaking French by the time I was twelve. (could)
I could speak French quite well by the time I was twelve.
We couln't go to the festival last year.
We were not able to go to the festival last year.