Are these just the oldest leaves?

Is it also putting out fresh new growth?
If so, get a pair of scissors and snip off the old brown leaves near the base - it is quite normal for strawberry leaves to do this.
If it is not putting out new growth then I'm afraid I don't know the answer, but a photo may help others to work it out.

thanks, there is new growth i have been snipping the brown leaves off

Adam40 its happening to mine as well, cut the leaves off, there the old ones

hi,try feeding them.its the right time of the year now to give them a feed,i feed mine on liquid tomato feed, but do as the others have said,by the way how old are your strawbs they may need changing if too old

the plants are new just new last years

Magnesium and potssium deficiency? Try NPK (nitrogen, potassium, phosphorous 1:1:1)