Hi AstroPR,
I am Sumit, an Independent Advisor and a 3 year Windows Insider MVP here to help.
The Free Minecraft offer ended on 20th April 2020 for standard Minecraft Bedrock edition where you had to manually ask for code on the Mojang site. RTX is free for those who have Minecraft Bedrock edition.
You may ask Mojang support and see if you are lucky :)
https://help.minecraft.net/hc/en-us/requests/new
Hope that helps.
Disclaimer:
This is a non-Microsoft website which would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.