It appears this is well hashed so not sure how relevant it is but for what is worth, i havent used any google services on my phones for the last 6 years, and i have been a paid proton suite member for that time, and have never had any what i considered to be issues running any of the apps...so i would definately recommend proton.... the Caveat being "what i consider to be issues" i dont use or need notifications if i want to know if i have emails i open my email client... and i have never had power management issues with the vpn, where as for proton pass the only thing to be mindful of is dont use autofill on android as a result of this Security Audit
but if you can live with copy and pasting credentials, not a big deal imo.
the biggest issue i find with not running google is getting a hold of apk`s, but there again proton provides direct links to apks so as long as you are happy to manually check in once in awhile and download and install newer versions than its all good... (no playstore to automatically monitor and upgrade apps) again not a big deal imo