Hi and welcome to the forum! Please don’t use AI to write your posts, as it overcomplicates context even more and makes us not understand what we need to give you help. Repeated use of AI on your posts will get them flagged and deleted.
As for your problem, you can’t add TXT records on free hosting, except the one you need for SPF. If you want full record management, please consider using your own domain (if you don’t have one you can get them from the websites I listed on one of my posts) and setting up Cloudflare or using your domain registrar’s DNS panel as I’m afraid that if you upgrade your account to Premium Hosting full record management won’t work either on free subdomains.