@Gina looked at it again with my glasses on 😂.
You need a round nose router bit of your desired radius, a set of very flat rails, a flat router bit, a circle jig, and patience. If you also need to make the circle stock the circle jig and a jigsaw would help. There are of course handtool options as well though you will need to increase patience roughly 1000%. I can help if you want. Will bring tacos.