Thanks for reaching out. YouTube doesn't subscribe you to channels automatically. Could you confirm if it shows "Subscribed" on the channel page across devices? Also, do you have any third party extensions installed on your browser: https://yt.be/help/Jij7 ? Let us know.
Hmm, try signing out & signing in back and switching accounts to see if that makes a difference? Also, have you tried clearing your watch & search history as this may influence your recommendations? Keep us posted.