I am a solo staker and its been a blast learning about PoS and participating in the community. Right now you can earn ~7.8% rewards if you lock up your eth on your own validator. Once EIP1559 goes live (July) and the full transition to PoS merge around the end of the year there are some folks on the ETH research team who see rewards conservatievly going to ~25% [1]
[1] https://twitter.com/drakefjustin/status/1384124998084792324?...