What to do after completing Shadowbringers?

[SecretIsland]

There's a lot of things to do after completing Shadowbringers, and I admit that I'm a bit lost. What type of content would you recommend for someone who just finished the story? (I noticed there is another flaming quest icon after I completed Shadowbringers. Is that the Endwalker series?)

If by "completing Shadowbringers" you mean you just finished the "Shadowbringers" quest, i.e. done all the MSQ up through patch 5.0 then you should continue. The Shadowbringers story doesn't stop there.
Around patch 5.4 we get the beginning of the prologue for the Endwalker series.

After you have done all the MSQ, then do any dungeons, raids, and trials you haven't finished yet. Several of them are quite relevant to the story, and many of them help you get better gear.
After that, you can always try leveling some other classes.

Thank you kind person for your suggestions!