Also, how many transactions/day does the second-most-used cryptocurrency facilitate?
If so, then you don't want Bitcoin. You can use Paypal.
However if you want to own an asset that can't be debased by central banks, where your transactions can't be censored, where you can participate from anywhere geographically, then you might want Bitcoin.
Those features come at a transaction capacity tradeoff.
If you say "Choose proven cryptocurrencies with transactions" I am going to assume you don't mean ten transactions/day.
I do not think it is unreasonable to ask "How many people are actually transacting with this cryptocurrency?".
2) Type "Bitcoin transactions per day", click search
3) View results
????
Is it really a good idea to invest in such a volatile asset?
(Genuinely asking as a complete noob)