There are some groups or sects of Islam that take the Qur'an as a purely symbolic book, including some branches of Sufism. They do away with most of the laws, stories, etc. by calling it metaphorical and ascribing understanding only to their very high-level practitioners, much like the Bible cannot be interpreted by any but high-level officials.
I can only speak on behalf of Sunni Islam, and somewhat of Shi'a Islam, when I say that "Iblees is a real, living, breathing being." This is a non-issue, and substantiated by many ayaat, including:
And [mention] when We said to the angels, "Prostrate to Adam," and
they prostrated, except for Iblees. He was of the jinn and departed
from the command of his Lord. Then will you take him and his
descendants as allies other than Me while they are enemies to you?
Wretched it is for the wrongdoers as an exchange. (Surah Kahf, verse 50)
It clearly says "kaana min al-jinn," he was from the jinns. "min" has several meanings in Arabic; one is to single out a subset of a group that belongs to that group.
Another ayah states:
And [mention] when We said to the angels, "Prostrate before Adam"; so
they prostrated, except for Iblees. He refused and was arrogant and
became of the disbelievers. (Surah Baqarah, verse 34)
There is also a very well-known hadith of rasulullah:
لاَ تَأْكُلُوا بِالشِّمَالِ فَإِنَّ الشَّيْطَانَ يَأْكُلُ
بِالشِّمَالِ " .
The translation is: "Do not eat with your left hand, for the Satan eats with his left hand." (Collected in Saheeh Muslim)
I can say more, but I think these proofs answer your question sufficiently.
As for "personal" devil, there is an Islamic concept that each person has a devil assigned to him to tempt him and try to misguide him. Try this ayah:
And whoever is blinded from remembrance of the Most Merciful - We
appoint for him a devil, and he is to him a companion. (Surah Az-Zukhruf, verse 36)
The word "qareen" used in this ayah indicates a companion. So there is Satan (Shaytaan, Eblees), and also other devils (shayateen) with different roles.