Hadlima for UC treatment?

So, I was diagnosed with moderate to severe UC maybe a little more than a year ago. I was put on Mesalamine and it was working…for a while. Then it stopped working unfortunately. So my dr. attempted to prescribe me humira, of which my insurance denied and in turn approved Hadlima.
My post here is the result of being super hesitant to take this new medication. I’ve been reading up on it and not really liking what I’m reading. I know hadlima is biosimilar and falls under the same category as Humira and its side effects, as with TNF blockers.
I guess I just wanted to hear some first hand experiences with this drug and any warnings or encouragement in using it. Of course, I will check the forum for anything related to my question but figured I’d also start a post on it as well. Appreciate your help. The 2 possible side effects that got me most nervous was it possibly causing certain types of cancer ( I have family history with cancer…my mom passed away from colorectal cancer) and also the weakening of the immune system. I’m a 50 year old male for the most part healthy but to be honest a little overweight/out of shape ever since I got diagnosed with UC and my energy levels have left me not as active as I usually would be. I also seem to have sinus issues which is also a concern as one of the side effects is sinusitis. I know the likelihood of these occurrences is rare but I’m still concerned.