But take note that it's not easy money, some also lose money while doing Arbitrage trading.
I can say also these days, since we already have a lot of market, like these decentralized exchanges (DEX) on different chain network, these networks could be also good use when you are doing arbitrage trading.
Usually we can manage or consistent to earn profit with capital $100 but right now arbitrage needed above $1000 and possibility to earn profit under $20, not easy to find difference coins price right now in dapp and CEX exchange actually some coins when first time listing on CEX exchange not opening deposit yet.