Is my monstera healthy ?

So I have had this monstera for 3 months, it’s my first plant and I was wondering if it was healthy. I noticed that some of the stem started to get brownish and they seem to « shed » as well as some of the roots. I have also notice that one leaf kinda rolled up on itself so I unrolled it and it looks kinda weird now. Is it healthy and if not what should I do ? And if it is do you have some tips to keep it growing and healthy ?