I have an issue my wifi is not showing all available network instead only showing 5g wifi networks

Nothing wrong with your Wi-Fi.

Check -> If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network

If your iPhone, iPad, or iPod touch won't connect to a Wi-Fi network - Apple Support

See -> Recommended settings for Wi-Fi routers and access points

Recommended settings for Wi-Fi routers and access points - Apple Support

-> The Wi-Fi network name, or SSID (service set identifier), is the name your network.

And you gave the name -> HSAKaram5G, that is password protected.

-> Channel width

Set to Auto or all widths (20MHz, 40MHz, 80MHz) for the 5GHz band

See also -> If you need help with your Wi‑Fi password

If you need help with your Wi‑Fi password - Apple Support

Your provider support 5G, see -> Use 5G with your iPhone

Use 5G with your iPhone - Apple Support