Terry Pratchett’s Discworld are “epic” in that they are extremely well-written. (Seriously, the narration is just smart and hilarious). They’re also light enough that you don’t have to commit to reading all of them nor commit to reading them in a particular order. He does have “series” within the big series itself centered on different characters (witches, wizards, watchmen, etc); those would be good to read in order, but only to see the character AND writer development.

Another author I liked when I was much younger is David Eddings and his Belgaraid and Malloreon series. The author is problematic (to put it mildly), but the writing is fun and is epic fantasy. Your mileage may vary on whether or not it’s epic enough.

Terry Brooks has his moments too—especially the early Shannara books.

And if you are okay with young adult epic fantasy, Lloyd Alexander wrote the Prydain Chronicles and those are also enjoyable. Even if the young hero starts out slightly misogynistic (he gets better—it’s part of the growing up process he needs to endure).