The main difference between consumer Google accounts and G Suites accounts is that G Suite accounts come with an extremely comprehensive (complex, complicated) administration panel which is absolutely overkill for use cases other than managing G Suite users within a company / organization.
But, you can sign up for G Suite as an individual, and most of the default settings will just work out of the box without much customization needed.
You will have issues if you want to use things like Google Home or Google Nest (or any other consumer-only services... Nest thermostats, for example, won't connect to G Suite accounts and only connect to regular Google consumer accounts).
Here's Google's guarantee re: legally not collecting / selling your G Suite data...
> There is no advertising in the G Suite Core Services, and we have no plans to change this in the future. Google does not collect, scan or use data in G Suite Core Services for advertising purposes. [1]
[1] https://gsuite.google.com/learn-more/security/security-white...