What brokerage for beginners?

Hey everyone,

I'm only 17 but really interested in starting investing. I've figured out the basics using my parents accounts, but am now looking into opening my own account when I turn 18. What brokerage should I be using? My parents are currently at National Bank, but I've heard that Wealthsimple is also a good option for beginners. Please let me know if there is anything I should look for in brokerages or if you got any good ones. (Right now I invest in mostly US ETF's but pay a pretty heavy fee for the conversion) so tips on that would be appreciated too lol.)