Hello! Hola! I wanna loose 25lbs/10kg some advices?

Hello everyone! I'm from latinoamerica and I need a suport team I just sign into MFP for a second time
I did loose some weight (idk how much but I'm now 3 sizes less on all my clothing ) by changing my eat habits (I drop sugar and try to not consume so much carbs and drink the most water that I can)
Now I'm on the struggle of loosing that fat in my abs that is giving me nothings but stress, because it seems my body no longer respond to my diet or exercise. I have to say I have hypothyroidism so my metabolism is kinda lazy. Sometimes keep yourself motivated is kinda hard because your mind sometimes focus in the wrong stuff so that is why I sign up here for the second time so I can find other persons like me who wanna keep motivated each other!
Let's going to burn that fat together!
Sorry for my broken English and feel free to add me as a friend