I feel you thats why I transfer to ethereum too since theres a lot of affordable transaction site to use for it unlike btc. I happen to be inlove using eth's platform already and been trading a lot for a long time already.
All of them are good and for bitcoin, it is not always that we have such issue of high charge and like many of the people have said, this happens when there is congestion, which is why we have some of those altcoins has alternative for transactions that you do in a hurry.
If I am to choose any other coin as alternative to bitcoin when there is congestion, I will choose ethereum more than Bsv and bch that the op mentioned. I dint see anything that those coins offer that is special, if they were in a position of bitcoin too, they would have had congestion too sometime, which will lead to high fee.