Adjusting to living alone?

So my husband is moving out and I’m getting very anxious and overwhelmed. I’m looking for advice from women who went from being married with a family to living with just your kids. (Toddlers). What are some ways to make us feel more safe? To pass the time without being around another adult? To not feel miserable with being stuck with all the responsibilities, not to mention now having to mow and such? I’m so scared. I feel like I’m just going to be miserable, aside from the love and happiness from my babies. As well as feeling guilty for having their daddy move out. They love him so much and I feel so horrible.

Edit- he was cheating and we have not done counseling