After the snowstorm about a month ago, my dog started only going potty indoors. Please help! I’ve tried what’s suggested.

So my dog is a malshie (Maltese and shitzu mix) that was going potty outside, in my gated backyard, until a snowstorm about a month ago. She refused to potty in the snow (even tho I shoveled her out a spot. She had been doing going potty outside ever since I moved to this house about a year ago. At my old house she would constantly have accidents on the floor on a certain carpeted area.

I want to train her to go potty in the backyard again and not have to walk her.

I have tried:

1. Supervising her in the backyard but she refuses to go.

2. Putting her on a leash and walking her in the backyard so she would stop just running around to bark at other dogs.

3. I have only got her to pee outside a few times and praise her when she does.

Things I have noticed about when it happens:

1.it seems to happen right after she goes out but then I have left her unsupervised inside while I go out to smoke to come in and she has gone . Other times seem to be right after she has gone out also.

I am now crate training her. Any recommendations or help on how to get a dog to go potty in the backyard without being walked? I didn’t see anything in the help pages about it.