Fast theme and seo for a news website

Hello, I'm still looking for a good theme, I've been stuck on this for months, I don't know what to choose, I keep changing themes and this is not good for seo. I purchased the newspaper, jannah, smartmag and foxiz themes, with a license. I could use one of these themes, but I don't know which one to choose, I can also buy another theme if there are strong recommendations with evidence that the theme is very good.

For those who think they can help me with information about a theme that they use, it is modern and has a lot of traffic, they can give me details in private, I pay for this, just to find a theme that will help me in this sense and go for sure.

Thank you very much!

One thing drives my nerves with FSE WP theme; I have a good font for my site title and navi menue. But the template has different font type (content), adding patterns or with Gutenverse they have another different font types too, it's so much frustrating to make my font unite in all blocks doing it the manual way..... how you guys doing it in a FSE theme ?