Whats wrong with reassurance? It helps me

Hello! I just got diagnosed with OCD a week ago and joined the app today to find a sense of community. Since my understanding of treatment is minimal at this point, I'm confused why everything on here tells us not to seek or give reassurance? If someone could explain the reasoning behind that it would be greatly appreciated, as I want to make sure I'm not only watching out for it in my personal life but also using this app appropriately.

When I was a child, before I knew this was OCD, I struggled with constant "magical thinking" compulsions (don't step on the crack or mom's back will actually break, etc). When I later learned this was OCD, it almost immediately solved it. Any time I got a magical thought, I would say to myself "that's just an OCD thought. ignore it." and it just stopped coming! Like seriously it fixed the magical thinking stuff forever. But of course the OCD has resurfaced in other ways. So naturally, I've tried to use the same strategy since I had so much success with it previously. But I wonder sometimes if telling myself "that's just OCD" is almost functioning as a reassurance compulsion? I hate how meta this gets. For example, I have ROCD that comes and goes. So sometimes I'll get a thought like "what if i'm still in love with my ex?" and then I'll tell myself "that's obviously just an ROCD thought" and will feel relief, almost like reassurance. But it comes back. So is telling myself that it's OCD a reassurance compulsion ?? It's just so weird because it worked so perfectly as a kid with the magical thinking thing.

hi! i often fear im going to lose my job because i made a “mistake” (not really) that my manager caught and is waiting to tell me about or i fear im going to be kicked off the roster of a team im on for small mistakes that everyone makes. this often compels me to ask those people if i did good or not and gauge their reactions to see if theyre going to remove me and i fall into a cycle of asking and asking. how do you guys deal with these feelings / compulsions? when im flaring i often just spend as much time around these people as possible to gather “evidence” of their opinion on me, but then i get nervous that they hate me for being clingy. i also abandon other duties / tasks so i can spend time with these people to make sure they like me. what do you guys do? anyone else experience the sentiment?