Hi ashlie247,
For help with Wi-Fi connectivity on your iPhone, test the steps found in the article here: If your iPhone or iPad won't connect to a Wi-Fi network
If the issue remains, double check you've completed the reset network settings in step seven. Follow the remaining section "Get more help" to continue.
You can also check your router settings with the help of the article here: Recommended settings for Wi-Fi routers and access points - Apple Support
If you continue to have issues after completing the steps, or when testing on a different Wi-Fi network reach out to Apple Support directly to further assist.
Contact - Official Apple Support
Contact Apple for support and service - Apple Support
Best.