Any update on 5G issue?

My Nothing 2a after 3.0 fails wto connect with 5G, more specifically Jio 5G (India), at places it used to previously in 2.6. Whats worse is that I miss calls because it sometimes decides to switch up between VoNR and VOLTE on its own, even when kept static at a table.

This is causing me issues now. I'm appalled that nothing hasn't fixed it yet as I've seen many people struggling with this. Any idea how to fix this?

I've tried dialing ##4636## and putting it to NR only but the antenna signal icon shows an exclamation mark. And randomly it decides to keep 5G and spontaneously will change it to 4G.

Horrible experience.