Got two shit tablets for free, want to install mobile linux distros on them. Any reccomendations?

Hello! I’ve got 2 alcatel 1T7 tablets completely for free from my internet provider some time ago, didn’t use them at all because the thing is lighter than a rasppi. Want to tinker on it now, thinking of installing a linux OS for more freedom on what to do and also to degooglify the tablet. Any recommendations on OS...