Sales Essentials for one person
Would that be possible to get for myself?
There is no minimum number of users for Salesforce Essentials. While you can’t have more than ten users on that plan, you could certainly sign up for just yourself.
To be honest, for most solopreneurs, Salesforce Essentials is probably a little bit of overkill. If what you’re really trying to do is manage leads through your sales process, or keep track of your customer interactions, you might want to consider either Pipedrive, or even HubSpot CRM (which is free).