Hi @woofmeow
Welcome to the community.
First, to clear up some things, I am out of the US, but I used VPN, and your products do show. But check the Markets and its settings if you want to sell globally.
But to get back to your store, to put it plainly, you did most of the base work to have a store: added products and collections, did policy pages, and added full contact information (something a lot of merchants miss). So, to put it roughly in numbers, I would give your store 3/10.
I would address the theme first, yes, it is a free, default Horizon theme, and it is clean but very basic. It is not “wonderfully clean and inviting design,” it is boring clean, almost like an empty canvas. Think for a second, it is a problem with free themes, but this one is the default that a lot of people will use at the start. That way, your store will look like many others, and many with a similar theme, cats and dogs POD. Your “vibrant product images” for me scream AI. And that is not good but a lot of people tolerate it. I am just wondering, could you produce the exact same products as on images? Also, other images, besides the main one, have a strange shadow to me. It does look good on the product page.
You asked about “clarity of my home page.” There is an issue with your hero image. You should not have text on an image, especially where you place it. Because I could read only one of the texts on one specific screen resolution, and even on that, the bottom text is a bit cut off. Here is one example:
Placing the collection after is good ove, but there is nothing else. I am sure you saw a lot of e-commerce stores, and you may notice they have a lot more content, for a good reason.
For “how trustworthy it feels” well, you get one point for giving full contact details. But even that has one big issue: you do not have a proper domain. Selling on myshopify.com subdomain rarely works. It is either developer stores or scammers. Most businesses get a proper domain and email, too, so you do not use Gmail, as that is not professional at all. And I do not see any other trust signal that would make me feel safe to buy from you.
For pricing, I can not tell you much.
Mobile, its base theme feature is it fine, just again that hero banner.
Navigation? What navigation? You have Home link, and most people know to use the logo to go to home, Catalog that throws all products, and “Collection” as a title that does not give any clue where I would land. You need to improve this.
There is a lot of work ahead of you, and in a competitive niche so really, good luck. I advise you to read a lot of topics in Store Feedback, but also search “no sales” and " zero sales" and pick up solutions for issues other merchants had, and you have also. Learn and fix, and repeat.