Things to consider when getting a dog?

I know this can be vastly different depending on situation, but I'm hoping for some pragmatic insight here. My family is considering getting a dog for the first time, but we're not sure what typical day to day life looks like with a dog. We're not interested in breed advice yet, but more like what we'd need to budget time and energy wise if we were going to move forward with getting a dog. Bonus points if we could also get insight into what that looks like with a puppy and an adult dog (we'd be interested in getting a puppy).

For context, we would ideally get a lower shedding pup with lowish needs energy wise that might eventually make a good cuddly therapy dog. Training would definitely be invested in from early on. We have a 9 year old son and both of us have full time jobs (though mine is flexible and husband works from home). If you have a dog similar to what I'm describing, would you give me some insight re: your typical day to day responsibilities? Thank you!!

Thank you!!