If you want something like graphene or calyx (I.e. with additional de-googling and security improvements), take a look at DivestOS: https://divestos.org/pages/devices#device-blueline
Crdroid (which claims performance improvements, but also has a lot of customization options; reminds me of now deceased resurrection remix) is also good but doesn’t seem to officially support your device. There may be some ports on XDA, tho.
It’s good and everything (although it was a bit rough around the edges here and there), but is a no-go for me personally, unless they’ve changed their license. When I last checked it wad not open source, but merely source available since the license basically said you’re not allowed to modify the source code period. AGPL would’ve been a far better choice
*sigh* I fucking hate those sheeple.