How can I change the amount of posts before there are two posts shown next to each other?
Would like to have 5 posts with fulltext (disabled Excerpt function already)
Then change it to a double stream BUT excerpts now enabled.
Developing custom code for custom functionality is beyond the scope of support that we provide here.
If you are not a developer then you can consider hiring a developer to develop it for you. You can hire a developer from any freelance site. Colorlib recommends the developer https://www.upwork.com/freelancers/~011652ffec8865c6d5