
Hi @Tevon2.0 ,
SharePoint fits the logo into max-height: 64px and max-width: 192px. If for some reason the logo doesn't work with a square image, the size/ratio should be within these bounds.
Currently there is no OOTB way to increase the size of the logo box on my SharePoint 2019 modern site. This is by design.
Maybe you can try to use some third-party software: https://support.shortpoint.com/support/solutions/articles/1000282324-how-to-increase-the-logo-size-in-modern-pages-office-365-
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