While many niches are full of competition there are still jewels like airbrushing sitting out there with high value products that aren't full of traffic.
While drones are experiencing explosive growth overall and can be somewhat difficult to build yourself in the racing drone scene is far less popular hence $$$$
Issue for many with the homepage blogroll and sidebar having bold and or italic text is due to the way Acabado pulls in the excerpt to be used.
The best ways to manage your site speed are right in front of you, to speed up your WordPress site you need to manage hosting, plugins, theme, and images.
If you want a solid evergreen niche then Bonsai Trees are ripe for a nice long term site build where you can gain ground but have it rank for years to come.
When you make links to your YouTube channel why ask for a sub when you can force the request on click?
One thing which impacts Acabado non-stop is the poor look of the images on the website, especially the homepage and featured post images.
Acabado has SEO functionality baked into the theme which can cause issues when you like to use Yoast, Rank Math, or other SEO plugins.
Acabado has a Hero Image which works well for a desktop view but it is cropped and unusable in mobile view for most, this method allows you to replace the image