It's not uncommon for students to get admitted, but then are unable to accept an admission offer due to financial reasons. It can be the case that you get admitted with partial or no funding. Pursuing a doctoral degree is a long process and can be costly. Honestly, you have to seriously consider your financial situation prior to applying. If you do get admitted and obtain full funding, which can range anywhere from 15k-30k on average, will this be enough financial support? Also, you must take living expenses into consideration as well.