Making use of copyrighted images, it is still important to add the sources. Below are the direct link to the images used in your post
Image 1. https://pixabay.com/fr/illustrations/bitcoin-crypto-monnaie-cryptographie-3089728/
Image 2. https://pixabay.com/fr/photos/masculin-maquette-portrait-homme-7275449/
Image 3. https://pixabay.com/fr/photos/minimalisme-%c3%a9motions-sentiments-4846000/
Image 4. https://pxhere.com/en/photo/920992