There is no such thing as an ideal age to become a mother. The important thing to keep in mind is that age is an essential factor for female fertility.
As a woman's age advances, her number of available eggs decreases until they are depleted. For this reason, it is often said that the best age to achieve pregnancy is between 18 and 35 years of age.
After the age of 35, many women find it difficult to conceive. In these cases, the solution would be to resort to assisted reproduction techniques.