Look fine to me. My plants look like that from time to time. They still keep producing berries.

Your plants look good to me, but I'm no expert.

I've seen this happen to some of my strawberries, when I water in a hurry and get the leaves wet (and they stay wet).

I've also seen this happen to the lower leaves on my plants that touch the soil. I think it's a moisture issue. I trim them off when I see a leaf that's going bad.

When you water, try to minimize water splashing on the leaves and if it is happening to the leaves that touch the soil, then you'll need to add some mulch to keep them from touching the soil. I hear most people use straw/hay.

This will also help when they start to fruit and the fruit get heavy and drop to the soil. They don't like staying wet either.

Good luck!

Google 'strawberry leaf blight' which is a far worse problem that what you are showing. That is running rampant in my strawberries this year...too much of a cool wet spring I think and I have not sprayed anything yet.