losing the look cos have to work?

So since been working have noticed that my look is well losened up even when I’m off work . Hate the fact that have used to wearing lose tops and random trausers . Aint a good look at all . Plus the fact I have no sports activities what so ever thinking that need double up my work outs every day cos I noticed I have been losing weight but I know on this case its my muscle mass nt my fat . I dnt mind the job its a good and easy work but just seems I’m paying for it with my identity ..