Vadim Bogaiskov

Media file (image) does not contain field for title attribute, only for alt attribute.
Plugin add text into title attribute from alt attribute when image is inserted into post if title attribute is empty.
As alternative see plugin <a href="https://wordpress.org/plugins/restore-image-title" rel="ugc">‘Restore Image Title’</a> by Les Bessant. 
The ‘Restore Image Title’ inserted the post title into title attribute.

Title like Alt

Restores the title attribute from Alt attribute when images are inserted into posts

Mario Peshev

DevriX

Lachezar Gadzhev

DX Webp Picture Tag Image Wrapper filters the content and replaces the img tags with picture tags by adding two sources – one with the image followed by .webp extension 
and one with the original image.
The plugin supports jpg, jpeg and png formats
Your site needs to support Webp images
DX Webp Picture Tag Image Wrapper resolves the issue with Accept header on Safari that doesn’t include the webp format. Using the picture tag 
allows the browser to render Webp images, if they are supported, without relying on that header

DX Webp Picture Tag Image Wrapper

Automatically wraps content images in picture tag by making one of the sources webp. It supports Gutenberg content

Title like Alt vs DX Webp Picture Tag Image Wrapper