While the grammar could use a lot of improvement, the general ideas are there so even though it's not proper, it's understandable. I can't read some of this very well because it's all in romaji, but if you would like to improve it, I could suggest this:
konnichiwa!
juusan sai no anjarina desu
kazoku wa watashi to haha to chichi to otouto no yonin desu
watashi wa oosutoraria de umaremashita kedo chuugoku jin desu.
uchi wa shidoni desu.
pho, akanbou to chousen ga suki desu
demo toufu, taikutsu to hayaku mezameru koto ga kirai desu.
shumi wa suiei, utau koto to badominton desu.
gojuuissai no chichi no namae wa arubato desu.
watashi no chi chi wa indo kara kimashita kedo chichi wa chuugoku jin desu.
binshou, hatsumei to heiwa ga suki desukedo gizen sha, sakana to dorian ga kirai desu.
shumi wa soukou, UFC to eiga wo mirukoto desu.
yongosai no haha no namae wa yusutini desu.
watashi no haha wa indonishia kara kimashita kedo haha wa chuugoku jin desu.
kyuujitsu, taberu koto to suimin ga suki desu kedo uso, sakebu koto to tatakai ga kiirai desu.
shumi wa suiei, kaimono o suru koto to haikingu desu.
Also, I understand that in the beginning, many people are taught to end sentences with "desu" but it's really not used this much in actual real life situations.