Help Simba Get Life-Saving Treatment

Hi my name is Laura and my cat Simba is super sick and close to death. I’ve had 3 back surgeries and have been out of work for a while. So my funds are super limited but he is my best friend and I would do anything for him. He saved my life when I first got him under our neighborhoods tire. Now it’s my turn to save his life. I just started work again but I don’t have even close to enough funds to get him the help he needs. I applied for care credit and scratch pay but was denied. I don’t understand why we can’t take our animals to the ER just like people and they will treat them. Please help I know he is going to need blood work, X-rays/ ultrasound and possibly a GI scope. Please I am begging anyone that can help. I love him so much and he’s only 4 and he should have many more years with me. Please help and please if anything put Simba in your prayers. Thank you so much!!!