Quote Originally Posted by Jeeqbit View Post
It's true that if you do anything other than the MSQ, at all, you will probably get overleveled. There is typically a gap of 1-3 levels at the end of ARR and each expansion that requires just a little bit of leveling via other means (such as FATEs and sidequests), but it's usually not that much.

From Endwalker onwards, they made the MSQ itself enough without sidequests.

You can do roulettes on other classes (since you can switch to them by changing weapon then saving a gearset). They are mostly intended for secondary classes.

Alternatively, you can just ignore that you are a higher level because it doesn't matter. The story will "sync you down" to the level of the MSQ for all duties, dungeons and trials. You virtually can't do content higher than the level of the MSQ in most cases due to the MSQ gating new areas and its associated content, so your "real" level is the level of the Main Scenario Quest, in most cases.
I started 10 days ago as well. At first i did the MSQ only. Till i started doing the additional quests thinking i might be building some rep like they have in wow. So i did quite a few outiside of the MSQ line. I cleared whole shrouds of quests and did a few fates.

I should have done the blue quests but did nto touch them for some reason.

When i picked up the MSQ again and started doing that i got to a point were i was 28 and had to get more XP from other sources as i did not have enough to do the next MSQ which requird that i be 30.

So even though i did tons of outside quests and fates for XP i was still well short of progressing the MSQ at 30.