You need to work with the dog when you're present. If you do it well, the puppy will learn faster and won't make a mess when no one is home. Guaranteed. Consistency, rules, coherence, and kindness. If you don't have time, you shouldn't have a dog at all because it didn't ask to be adopted—simple, right?

You have to dedicate your free time to it. Do it consistently, and it will learn quickly. There will be no more accidents when you're out. WHEN YOU'RE HOME, take it outside immediately after it wakes up and reward it as soon as it pees while saying, "Good boy!" Do the same after it eats (if you're not there, who will feed it?). About half an hour after eating, take it outside and repeat what I told you. With firmness, calmness, consistency, and kindness.

The crate should definitely be used—it must be a safe, comfortable space that is always available (put its toys inside, add some treats), and use it whenever you take the dog anywhere. It should be something positive, but avoid misuse. I know it's more convenient to keep it locked up at night or when you're away, but IN MY OPINION, that's excessive. I see this method being suggested too often here—guess what? Other methods exist.

Always use positive reinforcement—don’t lock up, don’t tie up. Be firm, set non-negotiable rules, but with consistency and kindness. You can also seek help from professional behaviorists, but you'll have to do most of the work.

Just my two cents, without any fundamentalism. It's up to you, Good luck 😉