First of all, your transaction fee has nothing to do with the amount you're sending. This is one of the best features about Bitcoin. I can send a million USD for a few cents in fees, just the same amount as if I were sending $5. That's only if the mempool is low, though. You can check it on any block explorer you wish; one that is visually appealing would be
https://mempool.space/.
It gives you recommendations of a low, medium, and high priority fee based on the mempool's current state and it's updated in real time. It also gives dollar values for each.
You can also see in the 'incoming transactions' panel if Bitcoin usage is high or low right now and it allows to gauge if the mempool is expected to 'cool off' a bit soon or if it's expected to get more and more congested due to too many transactions being submitted.
Btc is more widely accepted than a lot of altcoins and is also more stable than most.
When you mention cryptocurrency, many people have heard of btc and eth already - there's probably not many that hear about stablecoins (for better volatility resistance) or ltc (for low fees and faster speeds). Btc is also probably the most secure chain in the cryptocurrency space (it's subjective afaik but it's the oldest and has one of the largest number of witnesses).
How is this of any relevance to the question?
