The Star Wars films are mythologized retellings of historical events, which each succeeding trilogy being less historically accurate than the one previous.
The OT is the trilogy that most closely recaptures the actual events, though there’s still a gradient. SW is the most accurate; the timeline’s compressed, and some of the superficial details (lightsaber colours, for instance), are wrong, but you can be assured that you’re not being grossly misled. TESB is murkier; Anakin & Vader were actually separate individuals all along, and the timeline’s even more compressed this time around. ROTJ is the most mythologized; Luke & Leia weren’t siblings, and there never was a second Death Star, though there probably was a climactic battle between Imperial & Rebel forces which occurred concurrently with some encounter between Luke, Vader, and Palpatine.
The PT is heavily mythologized. If the Jedi ever had a Chosen One prophecy, it was applied to Anakin/Vader retroactively. Anakin/Vader had a human father. The Clone Wars were multiple conflicts involving several disparate parties which were condensed into a single major war with two sides. The Jedi rebellion/Jedi purge were longer/more complicated events. Boba Fett may or may not have been the son of Jango Fett, who may or may not have been a clone template, but he wasn’t a clone himself.
There’s virtually nothing about the ST that matches actual history. It’s just a nth-generation retelling of the OT. There probably was an Admiral Holdo who died in a kamikaze attack in some battle with Imperials, but that’s about as close to historical accuracy as it gets.