Oh wow, this is really amazing and admirable. Usually smaller boutiques don’t have that much of a chance because there is a lot of competition due to the many chains and big corporations - but for you, of course, I’m really happy!
You don’t know much about computers and programming, but you’re smart enough to give it up and put it in trusted hands - that’s just as smart. After all, as the owner you have a great responsibility towards your customers - also for their data. Using such a provider for DBaaS makes sense if you don’t have much experience with databases yourself and don’t dare to manage the whole thing on your own. In addition, with a DBaaS you have the advantage that everything is stored in a cloud and you therefore have virtually no hardware resources and therefore no hardware costs to cover. This DBaaS provider Aiven has such case studies on its website, where you can read about how it all works and how they support their customers as DBaaS. Afterwards you can decide if it is a good and trustable partner for your stuff.