My name is Lilith, I'm on the Social Care team at Shopify.
I'd like to know a bit more about your situation, can you provide some screenshots of what you're referring to and what you want it to look like?
From what you're describing, it sounds like you may have some product or collection titles that may be overlapping and you want to change the link of that specific product or collection.
You can edit the link to each product and collection among many other things in your store. We have a guide in our Help Center that can walk through this for you.
Editing other metadata of your products and collections can be extremely useful as well. Aside from customizing the link you want to appear in the bar you can also edit important SEO information to rank higher!
If you haven't had a chance to see our guide I recommend checking out our guide on improving SEO. It's important to create a well-written meta description that can provide potential buyers searching for your products with a quick recap of the key benefits of your product. This would be your first touchpoint for that prospective customer, a crucial point of the customer journey! Try to incorporate high-value keywords in your well-written meta details and product descriptions and make sure your links are easy to understand.
Let me know how you do with the information above! I'm happy to answer any questions you think of as you work on your business.