you need to separate 2 terms
1. account leverage 1:1 - 1:3000. Even with account of 1:3000 you can trade safely - not overtradings, limiting risk by using SL.
2. used leverage - if you overtrade your positions you will lose regardless the leverage of the account, though on low leverage it will be slower.
Cons - with lower leverage you make less profit, you can't make profit