if I won't/don't

If I won’t/don’t be able to read bad ones (records) (just 3-5), I will fill out the forms with the info from them at the archives.

won’t or don’t? according to the conditional I it should be: don’t?
but why do I like also: won’t in this sentence?


It should be:

“If I can’t read (the) bad ones …”


“If I’m not able to read (the) bad ones …”