can anyone explain this strange situation ?

for one month now, when i go to transfer market section, the minimum time that players have till end of transfer time is more than 30 min, if i connect for example after 10 mins, i wont see the players with 20 mins remaining time
but again the next players with 30 mns + remaining time
this happens in mobile and PC also

any comment will be usefull

Also i think i have prob with injuries, as high is treatment fascilies are, the higher the injuries