SIM unlock Verizon VS995 for different carrier

[JCDinPGH]

I have a LG V20 (model VS995) that was previously from Verizon. I switched to google Fi and my phone has never worked correctly. After months of delaying doing a full data reset as per their suggestion, I finally did it and rebuilt all of my apps but now when I go through the Google Fi activation process, it says the SIM card can not be read. I even ordered a second card just in case but I get the same error. I have tried multiple times. According to Fi support, they are saying my VS995 was never fully SIM unlocked from Verizon. Before I left Verizon, they told me their phones aren't really locked so there was nothing to do. Can anyone verify that I really don't need to unlock my phone? I have been having issues for months and now my phone has zero phone functionality. It can't send or receive calls at all. I will gladly go to a local Verizon store if needs to be SIM unlocked. I am hoping one of you has an answer as googling "VS995 unlock" beings up countless web sites with zero valuable information that actually works.
FWIW, my phone is not hacked at all.

 

[C D]

All VS995 models come SIM-unlocked out of the box because Verizon at that time was required by law to do so (they started SIM-locking their phones again around June 2019), so there is nothing needed to do on Verizon's end to unlock the phone, and I'm not sure why the SIM card can't be read unless Google Fi gave you a Sprint SIM card, which is totally different and only works on the LS997 model. As far as I know, Google Fi's main networks are T-Mobile and Sprint. The VS995 is rather bad in reception for Fi since it has none of Sprint's LTE bands and only has LTE bands 2 and 4 for T-Mobile (lacking bands 12, 66, and 71).