Use understandable names and consistent rules. Decide how to represent languages, product identifiers and necessary filters, and avoid creating unnecessary addresses for the same content.
Folder depth is different from the number of clicks from the homepage. Check actual navigation links to important pages; three clicks is not a universal ranking threshold.
When changing an address, manage its relevant replacement, redirects, internal links and sitemaps together. Performance can fluctuate while search systems process a move even when the migration is properly implemented.