Welcome to imgflip Rongermany.
You can make your meme larger if you start with a larger template (like the Ancient Aliens) and click "add image" then "inside current image."
Then you can upload the image you want to use for your meme or search the images already on the site in the "search memes bar."
Be sure to check the box that says "Include User Templates" so you can choose from all the available images.
Then you can stretch your chosen image to fit the larger template. Then add text and we will be able to read it.
Oh, and give your commenters upvotes.