I am trying to understand the theory of probability using a probability three with the example of a coin ( one fair and the other one altered)

Can someone help me to understand it?

This is my question: if for example, I have a fair coin and I flip it 5 times what is the probability of getting the same result 3 times in a row? For example, 3 heads in a row. and What is the probability and then how I explain it using a probability tree? Do I have 16 outcomes or more?

Second ( the same question but with a "twitch" )

What happens then if we play the same game (one of flipping 5 times the coin and the need of getting 3 same results in a row? But someone decided to cheat and plays with a coin that is altered to lands heads 55% of the time. What would be the expected value in the game and how a probability tree will look. I am trying to figure out this exercise to understand the concepts, before getting into more difficult concepts.