Cat ran away 😞😞

My cat ran away last night and I could literally die. Everybody is saying just get another if she doesn’t come back but how can I just replace her ? I adopted her recently and I already bonded with her so much. I was so hesitant on getting a pet because I thought I wouldn’t be good enough for it. I feel like I failed as a pet mom. I never thought I would cry over an animal like this 😞. I put her litter box and food outside hoping she would come back