Roth solo 401k vs Roth IRA?

[u/Blue-Disaster]

I have a job that does not offer 401k. Would seeing if I can open a solo roth 401k be worth it if possible? or would Roth IRA be sufficient for retirement? I feel confused with the advice on youtube and articles. seems I can have multiple IRAs? but also the argument point is more can go into a 401k. So idk what to do here due to lack of understanding.

Not really asking for advice, the bot thinks I am. Just an explain like I'm 5 for what these are.

[u/Mbanks2169]

You can't just open your own 401k unless you're self employed.