[Xposed Framework Modules] i5lee8bit:
I ran A11 using Magisk 23.0 on my Pixel 4 XL until the very bitter latest end I could, and only because of a total crash that killed my phone (and would have lost data) unless I flashed and updated to A12... So in other words, I know where you're coming from. Though let me preface with the fact that modern Magisk (25.2+) with Zygisk and Shamiko works worlds better than MagiskHide ever did even when paired with legacy MomoHide, at least for me. So if I were you, I would give the new stuff a chance. At least if that's the reason you're sticking with 23.0.

Anyway, if you're hellbent on staying on Magisk 23.0, you will need to install Riru and LSposed. If you have EdXposed already, remove it and reboot first. If you're unsure, post a screenshot of your list of installed modules.

Okay, so Install Riru first, then LSposed. Reboot. Install GravityBox [R] apk and activate in LSposed Manager. It should automatically select the processes to hook into. Reboot, enjoy GravityBox [R]. Here are the links:

Riru: https://github.com/RikkaApps/Riru/releases

LSposed (make sure to get Riru version, not Zygisk): https://github.com/LSPosed/LSPosed/releases

GravityBox [R]: https://github.com/GravityBox/GravityBox/releases/tag/v11.0.5_r

Btw, even though GB is essentially discontinued, your question would have probably been more suited for the GB11 thread. Although I suppose you could also argue you probably wouldn't have gotten this response otherwise. I was just curious if anybody had continued modifying GB to work with 13 so here I am, and it's cool to see they have. Especially from the legendary @firefds, lol.

PS: on my [between me, my wife, and a family member whose devices I "manage" lol] Pixel 3, Pixel 4, Pixel 4 XL, Pixel 7, Pixel 7 Pro, Samsung Galaxy Tab S6 Lite, Samsung Galaxy Tab S7+, and Samsung Galaxy Tab S8 Ultra, all I need to do to pass SafetyNet, use Google Pay, AND hide root even better than Magisk 23 ever could, is all the same. Install Magisk 25.2, enable Zygisk, install Universal SafetyNet Fix mod by Displax, [install Shamiko - will explain in a second]. That's it, done. Maybe hide the Magisk Manager app too, which is always something I do by default anyway. SafetyNet passing and Google Pay working. No other mods necessary. For hiding root from other apps, keep Enforce DenyList UNchecked but configure the DenyList like you would MagiskHide (Shamiko essentially uses Magisk's DenyList to use as list to hide root, but Enforce DenyList must be OFF to work - btw, Magisk's built-in DenyList was never meant to be for hiding root, which is what a lot of ppl incorrectly assume). No need to select Google SYSTEM processes (like GMS, Play Store, Play Services, etc) though feel free to check off GPay / Google Wallet if you use them. The modern day mods (i.e. USNF) essentially selectively select the system processes to hide / deny in order to pass SafetyNet, so you don't even need to select them in DenyList anymore!

In a big way, it's even EASIER AND SIMPLER, not to mention even more RELIABLE than it ever was on 23.0 with MagiskHide + MomoHider once you understand what you're doing / the new procedures. Not to mention way more stable, and modern mods prefer Zygisk over Riru too (Riru itself is deprecated btw).

In case you ever want to give 25.2 a try, here is me making your life extremely easier and providing the links to USNF mod by Displax and Shamiko. Remember to remove LSposed Riru and install LSposed Zygisk instead if you decide to give it a try. Yes, GB [R] should continue to work under the newest versions of all this stuff, because I was running it all myself until pretty recently.

USNF mod by Displax: https://github.com/Displax/safetynet-fix/releases/tag/v2.3.1-MOD_2.0

Shamiko: https://github.com/LSPosed/LSPosed.github.io/releases

Quick edit to my freaking novel of a post: I just read about your concern since you're using a custom ROM / crdroid. I would imagine it would be similar, considering everything also works on AOSP (Google stock), LineageOS (Tab S6 Lite), OneUI 4.whatever & 5.0 (Tab S7+ and S8 Ultra)... Oh, and add my HTC U12+ to the mix, lmao. That's a pretty broad range of OS's if I may say so myself, so I would think it's at least worth a try for you to switch. But either way, both choices are there. Good luck.