hello I have a problem and it is that I need to free up space in dev/sda1 partition because soon it will get full and I will have problems, what can I do or how do I delete what is inside? or can not be Thks [Screenshot_2021-04-29-22-16-48-69]

Thank you very much, solve the problem thanks to your help [Screenshot_2021-05-02-15-12-56-04]