Hi guys! I downloaded a few mods, I think some of them have bugs but I don’t know which one is it. I am having issues about my career tasks and general tasks. Normally , I am supposed to do the task for like max 10 times, or even less. But now it requires 50 tasks to complete it all. It’s impossible but I don’t know how to undo it. Thanks in advance for your helps!

Maybe you grabbed something like "harder careers/job" or such? I'd try searching mods folder for career/job related ones and start from those to figure out what's causing it.