Why not just use direct linking offers ?

I am always using ig+cpa method but with landing page + content locker and the link have a cloaker but when i get conversion the payout are maximum 5$ on 1 cvr when i see some offer can get you more than 20$ just with 1 offer i asked myself why not just get link of the offer and cloak it then send it on my ig accounts ? Yes maybe conversion can be low but if i focus on geo targeting so i can convert only on the coutry that have the offer i can get huge payout with less conversion so why not everyone don't use it i always see threads or journey that just talk about landing page and content locker but why not just send direct offer link ? Please if someone can explain

Any answer ? Or idea