I forgot to mention before that every plant gets a minimum of 2 sets of leaves. I have 3 in a pot on advice of the gardening centre. Soms that makes 6 or more sets of leaves a pot

Those look totally fine, no plant's gonna be perfect. Strawberries are also very durable plants. If the brown spots grow, which I doubt they will, it might mean that your plants are either not getting enough water, or that there are accumulated salts in the soil. Again, though, I don't think anything's wrong. I have a patch of wild strawberries in my back yard, and nothing kills them.

I didn't fertilize the plants, only repotted them them so ithink it won't be the salts. Perhaps the water because my mother waters them some days when i Am at school. One last.question shall i remove all the flowers or.Just a part?

No need to remove flowers! The plants will bear as many strawberries as they can. And again, like I said, there's probably nothing wrong with your plants. It's natural for some plants to have brown tips like that on the serrations of their leaves. The watering is probably fine as is. Don't change how you're taking care of them until an actual problem comes up.

Thank you for all your help! I only.removed some of the flowers some weeks ago because it then was still smal. OnlY 4-5 flowers a plant so nothing to worry about.