Whatre the popular Altcoins crypto lovers are mostly using? Better if the coin has a low transaction fee too.
If you want to using some altcoins with low fee, maybe you can using DOGE coin.
I often to using DOGE coin when i want to transfer my coin to avoid high fee, because the tx fee is cheap in DOGE.
Other coin you may want to try : Waves coin. You can even create new waves token with low fee.