hello how to make automatic posting to all forum profiles

[swcodec]

When I search for my competitor's keywords, he has many posts on the web profile forum, my question is how. There are many ways to make a profile like this, whether he uses tools or other

for example:

Spoiler: Link demo profile forum

laurasimsskatehouse.org/community/profile/668/

Thank you in advance, sorry if my words are not understood because I am very new to SEO and English