Where to buy backlinks for parasites?

Hi guys

I am new in parasite seo can you recommend me some good backlink sellers?

Thanks

gsa ser all the way! or xrumer as well! Parasites have some authorite already, so just make them more relevant to your niche and blast them to the moon!

I will check them sounds interesting. How do you find the right keyword do you use tools such as semrush or you are doing just trending keywords?
One more question which parasites work for you and do you post from one account or you are making new accounts anytime?