Do you ever feel like you don't know how to "relationship"?

I will apologize ahead of time because I am very long-winded.

So, I am 27 and a mom of a 6 year old little boy. I feel like I really don't know how to date or relationship. I don't go out much, so I have resorted to online dating. I have had a few real relationships in the past.

For some reason, I tend to attract guys that are 18-24. Knowing fully well that these guys are not mature enough to for me, I still enter into these online "relationships" (more like situationships). These are full of lack of communication, childish tantrums over comments on my pictures, the need to have their name plastered all over my social media, and emotional detachment. Yes, I know. I know why I do it but I'll spare you guys the details.

Older guys tend to creep me out with how pushy they can be (along with some trauma sprinkled on top).

So now, I find myself talking to guy my age. I met him on Instagram. I was given the opportunity to date him or be in a relationship with him. I want to just jump into a relationship because I'm tired of being lonely but I chose to just date him for now. But I don't even know how to do that without sound relationship-ish. I'm a mess.