(New here) How can I get to a higher level of Insiders? All I'm given is Omega so far.

Hi Luna!

I've definitely had a similar situation before come up, usually around 3am pacific time they will roll out Insiders Updates. One of the nice things about being an Insider is getting access to frequent updates and new features, but it can get annoying if
you're receiving too many updates right when you need to be online. What I would suggest if perhaps lowering your Preview Ring tier. The tiers are as follows :

• Alpha – Open on an “invite only” basis and receives updates at the earliest point in the preview window.
• Beta – Open to Xbox Insiders with a Program tenure of 3 or more months and an Xbox Insider XP Level of 5 or higher. This ring receives updates shortly after Alpha.
• Delta – Open to any Xbox Insider with a tenure of 1 or more months that has reached Xbox Insider Level 2 or higher. Depending on certain edge cases where further attention is required from Alpha or Beta rings, Delta Insiders may receive
  system updates before Beta, though this is not a common scenario. Additionally, while early system updates are not guaranteed across the Delta ring, all Delta Insiders will receive the update prior to GA.
• Omega – Open to anyone and receives system updates shortly before the GA (General Availability) release.

If you are currently on Alpha or Beta, maybe lower yourself down to Delta or Omega? Those rings receive far less frequent updates, but still get some nice goodies ahead of everyone else. On Alpha I receive updates sometimes daily, but Delta and Omega receive
them more like weekly or monthly.

You can make this change within the Xbox Insiders App on your Xbox, going to "Insider Content" then head to "Xbox One Update Preview" under "System" and select "Manage. If you'd like more information on this, check the link below. Cheers!

https://support.xbox.com/en-US/xbox-one/console/xbox-insider-program

Yes, I'm in the Insider Program but I'm only an Omega Tester, I can't see any system update in beta test. Can on be invited by someone or by Microsoft to go at next levels (Beta, Alpha) faster? Many thanks

Hi ICARUSAEL

Sometimes that happens, despite everything, it's still an insider build. Some bugs can appear even if it’s the omega channel.
The higher the channel the more bugs that can appear

You can report this problem to the insider team here:
https://www.reddit.com/r/xboxinsiders

And if you want, go back once a patch is released

I really wouldn't like to say yes to that as the Omega ring gets updates just before general release so the odds aren't good.

The current Xbox One Update Preview rings are:

• Alpha – Open on an “invite only” basis and receives updates at the earliest point in the preview window.
• Beta – Open to Xbox Insiders with a Program tenure of 3 or more months and an Xbox Insider XP Level of 5 or higher. This ring receives updates shortly after Alpha.
• Delta – Open to any Xbox Insider with a tenure of 1 or more months that has reached Xbox Insider Level 2 or higher. Depending on certain edge cases where further attention is required from Alpha or Beta rings, Delta Insiders may receive
  system updates before Beta, though this is not a common scenario. Additionally, while early system updates are not guaranteed across the Delta ring, all Delta Insiders will receive the update prior to GA.
• Omega – Open to anyone and receives system updates shortly before the GA (General Availability) release.

https://support.xbox.com/en-US/xbox-one/console/xbox-insider-program

You should use the Reddit Xbox Insiders forum.

Btw I agree with you. This is the worst New Experience as far as customising is concerned.

It's now in select consoles with Omega OS Insider previews.

Reddit Xbox Insiders