I like your ideas so much, but there are some mistakes that I hope you can corect :
- "It’s true that many people consider several sports as dangerous, useless ones and they think such sports should not be allowed to play" =>> it may better if you use the relative clause : It is true that many people consider several sports as dangerous, useless ones which should not be prohibited
- "For example, there are plenty of serious accidents occur in the most popular," =>> occuring
- "Secondly, almost every person who plays extreme sports is aware of the risks of doing those sports and yet they are willing to keep on it" =>> shouldn't write "and yet", you can use : but / Secondly, despite of the fact that almost every person who plays extreme sports is aware of the risks of doing those sports, they are willing to keep on it.
- "Sportsmen have a lot of practice and preparation before trying to do something that is difficult and tricky. This ensures the number of serious, deadly accidents is minimized." =>> Sportsmen always have hard-working practice and good preparation before making their performance, which contributes to minimize the risks of those sports
- "Extreme sports are typically more adventurous than the others, so the people who play such sports are more likely to develop a fair number of crucial skills for survival and even for success in life." =>> you should revise the relative clause
- "Furthermore, many people participate dangerous sports not only as a way to improve their physical health but also satisfy their passion."
- "They may find extreme sports more suitable for that reason than other sports" =>> may be irrelevant
- "In extreme sports, the desired goals are particularly challenging and usually require great amount of effort to achieve"=>> Indeed, extreme sports are particularly dangerous and challenging, which requires their extraodinary passion.
- "Sports that are considered dangerous could be very useful and interesting to play as sportsmen are careful and well prepared." =>> Dangerous and adventurous sports are totally different and unique under sportmen's eyes because those sports can fire their enthusiasm
- your conslusion should be add more about what you mentioned above