i have been scrolling down the bounties section and seen so many projects related to Defi and Bitcoin but i cannot understand how the new project like Defi is giving a hard time to BTC and even to other altcoins like ETH and ripple and many more?
every post and campaign i am seeing is about Defi and its making more money than others/
why?

It seems to me that you cannot compare Bitcoin and Defi. Bitcoin is like the dollar, it is so strong that no digital currency can push it. Defi is actively developing, but in its own direction, and Bitcoin is following its own path. It will finally fall when the big investors are really disappointed in it.