When I try to connect to my Pi via ethernet, it gives me this error:
ssh: connect to host 169.254.76.206 port 22: Connection refused
what should I do and how can I connect?
169.254.76.206 is a link-local address. See https://en.wikipedia.org/wiki/Link-local_address
You do not have an IP, and while it is possible to create a limited connect via this on a single link, this depends on a number of factors, including the system from which you are trying to connect.
You need to describe your network configuration.
If you have a router, I suggest you connect the Pi to this.
This IP address might not work because it is a link-local address. I don't think that's the one you want (although it might be). When you start up your Raspberry Pi it should show you the IP address you can use to connect to it, which will probably begin with
However, your problem is probably that SSH is disabled. Use the command
sudo raspi-config to bring up Raspi-Config, and select
Enable or disable ssh server. This can prevent the "Connection Refused" error you've been getting, assuming you've been connecting to the right place.