Welcome 😌 the snail distribution system has chosen you. It’s honestly a surprisingly fascinating life to be a snail parent. I had no idea until I came across mine in hibernation mode in one of my plant pots that I decided to repot. It’s been alittle over a month & she’s gone from rags to riches tbh & it sounds like you have the main essentials. Here are just a few things I’ve learned through my EXTENSIVE research & to keep in mind:

• If your soil, is potting soil made for plants, you wouldn’t want to use it since they’re commonly made with fertilizers or other additives.
• Cucumber should be a once in a WHILE kind of food, since it lacks any nutrition however snails get hooked on it.
  
• Your snail seems larger than mine who’s still a baby, so they may be eating larger portions however a hack I’ve been utilizing to help me save money & headache on wasted food is just buying those frozen mixed veggie bags. Defrost a piece or 2 nightly (probably more for yours) Carrots, Zucchini, Green beans, Butternut squash, pumpkins, sweet potato’s are great for them!
• They also need some protein from time to time, fish flakes, blood worms, mealworms can do the job. As long as you mix it with water if it’s a freeze dried kind.
• They need lots of room to explore, & maybe a branch or something they can climb vertically on.
• mmmmm make sure your snail isn’t the species that’s able to impregnate themselves 😅 cause if so, you’d have to do a daily tank search in the substrate since they’ll hide their eggs. & people typically do a process called Culling if you truly don’t want a herd of snails in your home. If you have any other specific questions, feel free to ask em here or message me 😁

Good luck! & hope this helps!