Serious matter

My mom dad are together since 26years. My dad doubting on my mom since the beginning of marriage she doesn't have anything with anyone its just my dad's family nature that they keep doubting..My mom is a really hardworking women she is a mehendi artist she works so hard and my dad keeps insulting him also earlier he have beaten her..But tab we kids were not that matured to say something....Now for a really very silly reason he doubted on my mom in front of is 3 kids my brother just gave 10th my sister 12tha nd i have just graduated we are enough matured to know things we made them understand ki papa galat soch rhe ho jo h sb aapke samne h my mom's fitness sir who calls her sister just msgd achi tasveer h behen ji on fb and he created a huge scene then we three kids stood by my mom and then unhone hum 3 k samne mom ko slap kiya tab fir hum chup ni rahe uthe hath pakda mene dad ka ki aise kaise mara hum teeno k samne galti ni kuch ni...so he stared making video of us ki yeh log mujhe tourture kr rhe h milke meko kuch hua toh uske zimedar yeh log h nad in that video we were crying ki dad pls don't do this .he is like me sab jagha boluga newspaper me daluga tumlog ko badnam kr duga ki kaise ho...and we are inocent...He even said ki me yeh ghr bech k aadha paisa duga jidhr rehna h raho me apna alag tum alag...And we don't wanna leave this house...My mom has done nothing I feel heartbroken for her she doesn't deserves this..also my dad made a video sitting alone in hall and in that he is saying ki me agr sucide krta hu toh inlog zimedar h aur mere marne k baad mera property aur paisa kuch inko ni milega...I am literally so scared of all this I am just 20yr old I don't have any support my mom does not have knowledge abt law...If my dad don't sort out things and want divorce and we 4 don't wanna leave this house so what can we do in such situation....coz we don't have a fix source of income too...