You'll want metric tools. A Camary, whether made in the US or in Japan will have metric fasteners. Even some US designed cars have metric fasteners (even we know that our measuring system is bonkers).
Socket sets come in different drive sizes, which are always (in my experience) stated in US measurement. The common ones are 1/4", 3/8", and 1/2" and they have overlapping ranges of sockets. For starters a metric 3/8" drive socket set would probably be quite useful, both on cars and in other parts of your life.
The set may skip some sizes, because not all of them are in common use. But as best I can tell there is no good way to select the ones to skip. For example, Harbor Freight a purveyor of not awful tools and not awful prices in the US skips some sizes in their sets that seem to work well for Japanese cars, but which do not work well for German cars.
The pricing of sets (in the US at least) is so much better than the individual tools that it makes sense to buy the biggest set that you can talk yourself into. If you are picky about such things it is worth checking to see if any tools you buy in sets are also available from "open stock" so that you can replace missing tools and/or expand the range of your set.
Another thing to consider is that there are many, many choices for what you put on the end of the socket… Most sets will include 6- or 12-point sockets for conventional nuts and bolts. But you may also need hex (internal 6-point), or Torx (6-pointed star), or triple square (internal 12-point), and those are just the common ones…
Sounds like you're not in the US, so I can't recommend specific places to look at tools, but I'll be if you poke around you'll find stores that specialize in tools at decent prices. "Professional" tools are often priced at a premium that has very little to do with the usefulness of the tool – the value comes from things like delivery method, level of service, warranty, etc.
By the way, the mirror and bumper cover may be pushing the range of a 3/8" drive set. The mirror might be closer to a 1/4" set (or may not use sockets at all).