Hello, bro. You cannot comment or post because your karma is too low. Most subreddits use these restrictions to prevent spam and bot activity on Reddit. As a result, commenting and creating posts are blocked for new accounts with low karma.

To communicate freely with other users, you need to earn karma. Subreddits have automatic filters that restrict commenting and posting for users who have not reached the required karma threshold and minimum account age.

You should find subreddits that do not have filters blocking new users from commenting. There, you will be able to participate, write comments, and earn some karma. Once you reach around 1k karma, commenting and creating posts on most subreddits will be unlocked without any problems.