When OneUI 6 is available for s22 or how to enroll for beta testing when i don't have any invitation/banner/notice for enroll for beta.

I've Galaxy A14 5G since last 6 months and I'm continuously facing a issue where while traveling the call and sms stops working (Internet is working), and when someone is trying to call me it is showing I'm out of coverage for both of my SIM numbers....

On what date Samsung on6 will get android pie update , is there have any fix date or month ? , or this phone will not get any update of os more ???