Not sure what Yotta is like now (or was in 2023), but it used to be a very good rate. I think I opened my account in early 2020. Went back and checked my notes for details:

Every week, you would get a lottery ticket for every $25 in your account. In July 2020, expected value for a ticket was $.0227 ($.0157 if you exclude the jackpot, Tesla, and other top prizes that you were statistically unlikely to ever win). They also paid out a base APY of .20%, which was higher than savings accounts at a lot of big banks.

Adding those together, the APY came between 3.51% and 5.02%, which was good compared to most banks at the time. Over time they made changes which decreased the expected value of each ticket, I closed my account in 2021 when the rate was no longer competitive. Looks like I quit at the right time.