Make some time available to start watching the videos posted on youtube created by 'Side of Burritos'. He posted for each of several different Pixel models a live recording of the entire process of installing GrapheneOS.
A year ago the price for the 6a at Target continued to drop and then hovered at $ 300; NoAgenda's fee, until it stopped selling it, was $ 473.90. My Pixel 6a and 7 purchased at b&m Targets had an unlockabled bootloader.
A few minutes ago, Bestbuy's website lists the 7a as instock at various stores in my area on sale for $ 374; NoAgenda's current fee for the 7a: $ 715.27.
links:
Side of Burritos
https://piped.smnz.de/channel/UCij1VEjDb88RCbqsvZ1gqaw
installation instructions
https://grapheneos.org/install/
Pixel 7a in Charcoal
https://www.bestbuy.com/site/google-pixel-7a-5g-128gb-unlocked-charcoal/6539915.p?skuId=6539915
listings for 6a and 7a
https://noagendaphone.com/?page_id=5229