Hello ! I don't think there are bots, it would really be a scam to those who put money into online poker, and with today's technology, anyone who knows anything about programming would detect it and could make a complaint to the site.
On the other hand, I'm convinced that as you approach the early cashes with little chips, going all in against someone with more chips than you, the program simply takes you out of the equation. For example, if there are 100 players left, you are the last one and you go all in with 5000 chips and AK against someone who has 50000 chips and calls with 7-2, he will surely win you with those cards.
Greetings