Root it and/or install a custom rom on it. If you can install GrapheneOS on it then do that right away. If not i can recommend custom rom + root. Root lets you do whatever the hell you want, including more privacy; so i personally prefer it.

(You can’t root GrapheneOS, because it’s already privacymaxxing and securitymaxxing)

(As for which rooting method, do magisk. If you are a poweruser do KernelSU Next.)