When I was looking through sistani.org, I found out that you cannot have the repeated number of takbir al ihram as even, so for example you say takbir al ihram and repeat it twice (repeated amount is even) due to some mistake. I realized this, but I didn’t know it was the amount you repeated takbir al ihram, not in total, and some of my prayers the amount I have repeated are even. Do I have to repeat those prayers?

No you don’t