I hope the best for you on your journey to recovery. Losing almost everything is tough, but is there anything, no matter how small, in life that brings you joy currently?
As for fighting remorse, this is a tricky one. It depends on what you're feeling remorseful about and what coping strategies you're using to deal with whatever's weighing on your mind. Me personally? I drink everyday to deal with the guilt of staying on this planet far past my welcome, but I know this is terrible advice for someone already dealing with many issues in their life. It just works for me, the slow and passive suicide as they say. For you it may be a different form of escapism like getting obsessed with a tv show, memorizing the names of all the newest generation of Pokémon, hell even solving jigsaw puzzles can be distracting enough. If you're feeling really gutsy, you could try facing your guilt head-on by talking it out with a therapist or a trusted friend/family member.
As for a reason to live again, if it's nighttime for you, try looking up at the sky. Especially if it's a clear night and you can see the moon/stars. Not guaranteed to work but worth a shot and it's free. I can't really imagine a situation where looking up at the sky has made anyone's life worse. Worst case scenario you wasted a minute or so of your life with no net positive or negative to your mental health. Wishing you the best on your road to recovery.