Serious Question - Dating Sites

So I'm not %100 ready to jump into it (just got out of something not too long ago). But I'm really tired of dating guys that just aren't the type I really want to be my partner. I'm extremely busy with work and grad school and apparently not meeting the right people. So I've been curious about it. Have any of you ladies had real success with dating sites? How old were you? How does it work? I'm 24 and feel idk too young for it. And I feel like it would just be super awkward. And I'm not talking about Timder. I mean serious sites like eHarmony or Match.com or Christian Mingle or something. I would love some stories and advice!