retail arbitrage vs online arbitrage

Hello all, Firstly apologies for asking this question if it has been asked prior. So… as the title says, but which is better? I work full time 9-5. I am tired and still young. I cannot think of anything worse than doing this until my 60’s. I don’t expect to “get rich quick” I understand there is a lot of work and effort that needs to put into this but I am willing. I’ve already been researching rigorously. But overall from people who have been there and done that and experienced it first hand. What is the better option? Any knowledge or person experiences would be greatly appreciated. Thanks all.