What are the chances of getting visa of somalian students?

You have 50 % chance of getting it.
If you go there for tourism purpose, you should apply for a tourist L type. the first step is to prepare the required documents including your passport and copy of its data page, the application form, a passport-style photo, your residence permit in Djibouti, proof of hotel reservation and round trip air tickets. The next step is to submit the application to the embassy to apply for it.