Check out Bitcoin Cash if you want a scalable on chain crypto currency. Bitcoin Cash has the same history as Bitcoin up until August 1st, 2017 when they forked off the majority chain. Bitcoin Cash allows you to send any amount of money to anyone in the world for about 1 penny per transaction.
Well right now Bitcoin Cash has 8x the capacity for on chain scaling 1mb blocks on BTC vs 8mb on BCH. Next Bitcoin Cash fork gives us 32mb blocks or 32x transaction capacity.
Simplified a little bit I know you can pack segwit transactions into 1.7mb blocks on BTC.
