Photos are not displaying properly on my website

I see what you mean. There is likely a misconfiguration in how you are setting up the portfolio section.

Are you following the steps outlined under Portfolio Section in the documentation for your theme, Construction Light?

For more help with setting up your portfolio, you can reach out to the theme developer, Sparkle Themes at – https://sparklewpthemes.com/support/#contact

Since they created the theme, they will have the best idea of how to set up the portfolio section correctly.