u/Immediate-Cash-6208

I really have no clue what I'm doing and can't rlly find much information online. I found it at a charity shop so there's a few things wrong with it. I have no clue where this morin khuur was made or anything and I'm unable to find it online. I know I need to get a bridge but I don't know if I can just use any morin khuur bridge or use a specific one for this specific make. the missing bridge is also probably why the strings won't stay on the neck but I have no clue if they need to be restrung or anything (or if the bow needs to be restrung if that's a thing). I also don't know if I need anything else to play such as rosin because I know that's used for many string instruments.