2 year old dachshund still not potty trained, please HELP ME!!

I have tried so hard to potty train my weenie and she just will not stop having accidents in the house!

I take her out right when we wake up, after each meal, we walk 1-3 times per day, I take her out right before bed, and I give her a treat every time she potties outside.

I don’t know what else I can do and I’m at the end of my rope. I just want to cry because it doesn’t get better. The problem is most of the time I take her outside she won’t go to the bathroom we just stand in the patch of the yard for 10-15 minutes. Even in the morning right when we wake up she WONT GO! But we will come inside and then she will hide and potty in the house.

Is my only option to try to crate train her?? Are there tips of how I could start that? She’s extremely needy and has separation anxiety so I worry that will also not work well, but I will do anything at this point.

Please help me!, I’m desperate!