Move the regional sections of the site to subdomains or leave it on the main one?

Question

Search Engine Optimization

Tell me what are the pros and cons of the solutions
1. Do regional breakdown in the URL on the main domain
site.com/city/data/...
2. Do the breakdown into subdomains
city.site.com/data/...
I have no experience in this question, which option to choose and why?

Answer 1

The 2nd option is more expensive, since you will have to move not just one site, but as many as you have subdomains.
What's stopping you from assigning multiple regions to your site in Yandex? One-time costs (registration in the catalog), but immediately the growth of positions in all regions. Or do you need more than 7 regions?
And in Google, move by indicating all the addresses on the contact page.

Answer 2

Choose the option with subdomains if you need maximum coverage of the regions, as all large federal stores like mvideo do. Suddenly you overdo it with some subdomain and fall under PS filters - this will not apply to the rest.