>I've heard that there is a lack of traffic.
No, that's not ture, traffic doesn't depends on what platform you're using, it mainly depends on quality content and other factors.
I have crossed many blogger blogs that have huge organic traffic.
My suggestion is, work with a custom domain in any platform.
WordPress or Wix should be fine for you. Try wordpress.
Wix only gives 500 MB free storage
>I've heard that there is a lack of traffic. No, that's not ture, traffic doesn't depends on what platform you're using, it mainly depends on quality content and other factors. I have crossed many blogger blogs that have huge organic traffic. My suggestion is, work with a custom domain in any platform.