LB- I have been told by Rabbanim that in general, at my age, it is better to date guys were previously married. This is a general rule, there are exceptions, and everything must be taken on a case-to-case basis, imho.
I have known older single girls who married guys who were never previously married, girls who married guys who were divorced, and girls who married widowers. It seems to me that for girls in their 40’s, marrying someone divorced is the most common scenario.