Can i use someones at home bodyweight routine?

Just look it up on the internet for a written routine or look on YouTube for free workouts you can follow. 

https://darebee.com/muscle-map.html

https://yurielkaim.com/full-body-bodyweight-workou...

https://www.youtube.com/watch?v=Auo8veVyRIY

https://www.youtube.com/watch?v=IeGrTqW5lek&t=683s

You can pull up YouTube and find hundreds of workout videos of all types, including ones that don't require any equipment. Personally, I like workout videos by Hasfit, Fitness Blender, and Pop Sugar Fitness. You can also just look up online strength workouts without equipment or bodyweight workouts and find a lot of information. 

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Using items around your house (for example gallon jugs full or partly full of water to give you some weight to lift) you can add resistance to your workout. Push-ups, planks, squats, and lunges are just a few common exercises you can do. 

sit ups,  push ups, leg lifts,  squats, if you don't have weights, use bottles of water or cans of food