Failed Theory test twice, have next test scheduled

I have failed theory test twice, now going for third attempt. Kindly give me some advice to clear it this time.

I haven’t done the theory test yet (mine’s on monday). But the way I study is:
Read the book(s) (I bought theory from Trafiko and iKörkort),
I do a 65-70 question test -> write down which questions I failed to answer, then I look up the answers from another source i.e I fail a question on iKörkort, I use Korkortonline.se’s book to find the answer. Then I write that down on a piece of paper. And then another test, rinse and repeat.

1. I bought the physical book and read it once
2. I bought iKörkort app and read their theory and did the test question at the end of each section
3. I did their theory test ( at least once a day) for about two weeks. I checked the areas I needed to improve and went back to the book and read again.
I got 58/65 on the first try.

My tip is don’t rely solely on one source and combine theory and driving lessons of you can.