Help needed for a rescued 1-month old kitten (baby cat)

We rescued this kitten last February 09, 2020, and she looks like she's only 1-month old. We have 2 other cats here in the household, 1 is a male who hasn't accepted her yet, and the other is a female, who haven't had any offspring until now and who doesn't like the rescued cat either. The 2 other adult cats have to sleep outside, so we can make sure the baby cat is unharmed, especially at night.

On the 2nd day, the baby cat started having loose bowel movement (up until now). We are only feeding her baby cat food as well as milk that is made for humans. What we do is we mix the powdered milk in sterilized water, warm it a little bit, and put "Erceflora" probiotics, hoping that it would help in her diarrhea.

We'd like to seek your help in buying a kennel for her (which we can also use for future rescue cats), since there's another baby cat in the next block, that has been thrown away. For now, we can only hope for anyone to rescue that poor little baby, since we really cannot afford having another baby cat for now. Also, we will use the funds to buy her a baby cat milk, a cat feeding bottle, as well as keep up with her baby cat food. We'd also like to be able to bring her to a vet, so we can have her checked.

I am only working as a freelancer, as well as a part-time insurance agent, and doesn't really have enough for the baby cat. I walk and average of 6-7 miles a day so I won't have to spend on public transportation so I can save about a dollar a day so that I can use it to more important commodities. I am a Buddhist too, and an advocate of life by being compassionate to animals. I believe in KARMA (good and bad), and by you helping out in this endeavor, will surely bring you good karma in this lifetime or the next, and me by using the funds honestly, will also bring me the same.