I will like to keep this simple and short, you want to invest in DeFi projects? Yea they are the best presently in terms of fast growth and adoption but watch out for new DeFi projects because they are probably scam, you want DeFi project? Look into those that's been around since 2018 or max 2019, not all newly launched DeFi projects starts development in 2020, DYOR and Play Safe.
New idea will always gets hype so it will give opportunity for short term investors on legit projects to make money but long term is still unpredictable and on the other hand lot of scammers will also trap investors with the idea of defi so make sure we are investing after done enough research on the project, team, community and lot of other factors.