Many streamers use streamtip.com. It’s free and you get a nice overview of your tips, it’s also easy to set up on screen notifications with for example nightdevs alert system.
Just go to https://streamtip.com and sign in with twitch, then click your name top right and select account.
Set up a method for receiving payments (paypal is the most common i guess) and then your donation link will be streamtip.com/t/yourusername