I bought some smart light switches so I can have them turn on automatically at night

I bought 2 enbrighten z-wave light switches for the purpose of having them automatically turn on and off during night time and day time. I just finished installing them and to my surprise I can't even install them because I don't have an alarm. I have the bridge that I purchased and later found out I didn't even need it with the floodlight cameras I bought. I though I could use this bridge I bought to control my light switches. But apparently it can't be used to control a light switch. Now after doing more research even if I do buy the alarm so I can control my light switches. I won't be able to set a schedule to turn them on and off automatically lmao. I feel like I have already wasted so much money on things I don't need or are incompatible with what I want to do. If I can't do dusk dawn with ring and these switches, what is the cheapest way to make these smart switches actually smart and be able to have them automatically turn on at night.