'I couldn't use to' instead of 'I didn't use to be able to/I used not to'

grammaticality modal-verbs

Solution 1:

You could say: "I previously couldn't do that."

Related

How would I address people who attend church with me?
Is there a term for someone who barely moves their arms whilst walking?
Where does "the sky is falling" come from?
What does " three inches of plate in my skull" mean?
Merge in vs merge into [closed]
What is the etymology of 'Romanticism'?
word for that time of the month where funds are running low and you gotta wait til payday [closed]
Correct syntax using 'as well as' [closed]
What is the phrase used to convey the meaning of "to clock in and to clock out"?
Are "worth" and "value" interchangeable? [closed]
Is there a word that describes both the boss and the employees? [closed]
What are other ways to refer to water suppliers?