There is no such thing as a "subform" wizard. There is a form wizard. A form is a main form when you open it directly. If you want to use it as a subform, then you drag the form onto a different form. Access creates a subform control which holds the form you dragged into it. So any form is either a main form or a sub form depending on whether it is opened directly or is embedded in a control on another form.
When you use the wizards to build forms for you, you need to understand that they try to "help" you. Sometimes, that isn't what you had in mind. After you've created enough forms, you'll come to an understanding of what they do and you'll be able to make better choices in the wizards to get something closer to what you want initially. I never use forms created by the wizard as is but I frequently use the wizard to give me all the fields and then I just move them around to suit me. I always start with a query because that gives me a little better control. I can order the fields in the query in the sequence I prefer them to be added to the form. This has nothing to do with anything. It is simply one way of exerting my will on the wizard
When all the controls are stuck together, you can free them from their chains

Open the form in design view and click on the Arrange tab. In the table section on the left, if those things are active, you should be able to revert them.