You answered that a person who has wiswas in number of rakah, 3 or 4, if he does not have any gut feeling then he assumes 3 and adds a rakah. since I was not aware what to do at the time, I counted it as 4 as I thought if I add one then it would be acting upon the wiswas, should I repeat the salah?

Ustadh AbdulAziz al-Haqqan

No because u were more inclined towards 4