Single Product Page Image Thumbnails

Hi everyone!

On single product page, product image thumbnails (image gallery) are too messy if there are some more items.

1) is there a solution without a plugin to make it look more neat?

2) if I have to use plugin what do you recommend?

it currently look like: https://www.linkpicture.com/q/111_2.png

What I want is : https://www.linkpicture.com/q/Ekran-Al?nt?s?_43.png