unable to put logo on the left of the site branding

Hi everyone,
I use a child theme for Twenty Twenty One and it seems to work.
I’d like to have the logo (100px x 100px) on the sale level and on the left of the site branding (site-title and site-description).
Instead of this, it is above, centered and underlined.

I can imagine 3 different approaches and after 1 day trying I give up:
1 – a CSS solution in the style.css file of my child theme : would be my preference but its not obvious;
2 – may be a block solution and I am not really familiar with blocks at this time;
3 – playing with the template-parts/header/site-branding.php file. I ignore the way to enforce a different code and what code.

Thanks for any kind of help,
Regards
Etienne R

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