I have all my coins in on an online trading site (paxful) (low volume)

I plan on making a large investment very soon, and want to safely store all of my coins
I.E I basically want to drop a couple thousand, and keep them in the safest possible way, where I can revisit them in 5-10 years or so and reap the benefits, or cry about the loss.

What is the best way to do this, and what's the best way of ensuring a backup?

How do you currently store your coins

thanks in advance for any inputs

We all know that there is corruption everywhere, like in government or any other organization. Because of money, corruption can always happen with greedy people who always wants more money to them. Since bitcoin can be considered as money, can it also lead to corruption?

I believe that the initial purpose of crypto is to create a digital currency for making transactions quick and easy. However, in reality it has become an asset which everybody is buying and holding. Continuing doing like this will destroy the initial purpose of the coin?

What is your opinion?

Has the price of BTC been fluctuating wildly recently?This wave of gains was all due to the rise of the BTC, with Altcoin passive following, and many of the altcoin's price not rising, and if the price of BTC fell sharply, it would not be disastrous.Triggered a huge sell-off.Will most of them lose money?

Will Altcoins survive as bitcoin is going higher and higher and the demand is getting increasing every day, what will happens to altcoins