did i write that correctly in pinyn
Zuótiān wǒ kànle hěnduō zhōngguó diànyǐng (yesterday i watched a lot of chinese tv)

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Yes, it's correct!
But there's one thing:"diàn yǐng" means "film" in Chinese, it's a little bit different to "TV" : )

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you are all correct if you add nothing in English, because TV is called dian4shi4, and film is called diànyǐng  in pinyin.

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If you want to say " Chinese TV programs " , it's zhong1 guo2 dian4 shi4 jie2 mu4 in pinyin.
If you want to say " Chinese movie ", it's zhong1 guo2 dian4 ying3 in pinyin.