Well after testing the water a bit without pay for anything, i think this method is much harder than how OP said.
My english is really bad, i cant explain well to you guys.
I saw many people doing this method in youtube recently with many ways. I can tell that
1. Its impossible to earn 250 - 500/ day NOW if you only pay for bot, unless you found some channels only dumb people watch it.
2. You need to make a lot of channels, Youtube is easy to know that you are spam or not. And since you are spamming better get VPS, proxies and i think this method is good if we build up some channels. I cant be a hard spammer now because i already had 4 channels using my PC now.
3. Spam in Top trending videos are dumb, if you buy upvote. There is something call " flag commend as spam", more upvote more flags.
4. Free landing page arent good as well.
I will try this method again when i made my IG journey later