There's a lot of stuff that will need to be addressed, and some of it won't be fun.
Focusing on your reset button issue, the Roku 3 models had a pinhole (my 4200 does). You aren't able to straighten a paper clip and use it to press the button inside?
However, before you actually do that, you are going to need your Roku password. Did you not use it when you logged in to your Roku account to post on this board? Or did you create a new one for this forum?
Do you know the email address you used on your Roku? It would normally be found at Settings > System > About, but as it's not working, you can't access that.
On https://my.roku.com/ you should be able to log in and scroll all the way down to see the Roku devices on your account. And, if you know the email address you used for that, and have access to that email address, you can reset your password from the Roku login page on your Web browser.
Once we get all that resolved, I'll then ask just why you had a Roku in your had to drop it, as being in someone's hand is not normal use of a device. But that's for later.
Roku Community Streaming Expert
Note: I am not a Roku employee.
If this post solves your problem please help others find this answer and click "Accept as Solution."