And, for that matter, don't use other verbs instead of plain but reliable said.
Elmore Leonard gave these bits of advice (you can read more in the cartoon above) that are included in this admirable collection on Open Culture of writing tips from a variety of esteemed authors.
It's all good stuff, and I must say I felt pleased to read Leonard's advice on avoiding alternatives to "said." It's a tip I pass along the time. (We don't have to worry about it broadcast journalism, as the clip speaks for itself; in print and in online, though, we by necessity quote people.)
I remember once reading a piece from a newspaper that involved a lengthy interview with a single source - and the verb "said" was replaced each and every time by a different altenative. The verbs used were ones like "exclaimed," "posited," "related," "explained," "joked,' and so on. And so on. There were, indeed, more than 20, no two alike, and I know this because I counted them after noticing the trend.
And that explains the very point why it's best to avoid such verbs: they draw attention to themselves, and not what's being said. Plain old "said" carries the writing along, keeping the focused on what actually matters: the content.