About PoW network, you can use this https://howmanyconfs.com/ for estimation of how many PoW altcoin confirmations are equivalent tô Bitcoin confirmations.
That's a really biased way to express security by power consumption, you would till need 100k L7 to do a 51% attack and it's highly unlikely that much gear will ever be available on the market. Besides this thing:
SHA-256 @ 556,427 PH/s = 16 GW
is invalid if we think S21, a 200th/3.5KW the figure above becomes 9.73GW so suddenly the network is half less secure?

There are many options in which altcoins have low withdrawal or transaction fees if this is not for transferring funds from exchange to exchange I suggest use Dogecoin.
I'm surprised the majority isn't pointing at doge, it's the cheapest one, it's damn fast and most importantly is also widely accepted, plus unlike stablecoins you're at no risks of getting your coins frozen out of nowhere.
Anyhow, I would like to point out another thing:
Bitcoin fees are way
DOWN right now since December 26th, next block fee is just 30sat/vb.