Professor @pelon53 , I have done as you said, now please check it once.
In question no.2
As the professor @pelon53 said, the data is missing, I have done it, you also see it
I have added both of these in my answer.
Is Polkadot (DOT) a good investment in 2021?
Why invest in Polkadot(DOT)?
In question no.3
I completed depth analysis of xrp also in this question
In question no. 5
As you said that you do not understand my investment, then I made my second investment and I am showing it, please see.