Optimisation will not only lead to higher visability but also it also legitamises your business to prospective customers.
In late 2021, Google renamed Google My Business to Google Business Profile.
The old way of accessing your Google Business Profile / Google My Business Profile was to open a web browser and load up https://business.google.com/
That option still works.
If you're logged into your Google Profile, you can also simply search "my business" and the profiles you have access to will appear in the search results.
It's important to identify the difference between review frequency and review recency.
Review frequency relates to the timing of reviews received. It's important to have a regular flow of reviews as opposed to generating a good number and stopping. The review frequency should ideally be consistent and proportionate to your sales frequency.
Review recency refers to the when your last reviews were generated. Reviews that are years old are less effective as they're potentially less relevant to new customers. Ideally, it's best to ensure your most recent review is within the last month.