Prośba o sprawdzenie - opinion essay

Many people in the entire world practise extreme sports. They claim that it gives them big amount of fun, but on the truth it is very dangerous. For this reason they must take out special accidental insurance. Usually this insurance cost is higher than normal, but in my opinion it shall cost just as much as normal insurance, except somebody wants to insure him on higher price.
Firstly all people take participation in accidents, ones who practice extreme sports and ones who do not do it. For example, when you are staying on the street, you could be hit by a brick. At that time you could be more wounded than people who have accident during cultivating extreme sports.
Moreover people who decided to do extreme sports must have survival instinct and physical strength. Such as man who does white water rafting, he must be very strength and have eyes around his head to avoid barrier. It provides to conclusion that these people in normal life have less accidents.
On the other hand extreme sports is very risk and dangerous. Therefore even magnificent indoctrination and big strength could not help in tight spot. Consequences of nonattention in this type of sport could be very high, but oftenest all end on fear.
All in all extreme sports are very risk but major part of people who practise this have values, which give them safe in quagmire. Therefore price of insurance could depend from these people, too.

They claim that it gives them 'big' LARGE amount of fun, but 'on' (niepotr) the truth IS THAT it is very dangerous.
..but in my opinion it 'shall' SHOULD (powinnien) cost just as much as normal insurance, except FOR somebody WHO wants to insure him 'on' AT A higher price (a;e po co?).
Firstly all people take 'participation' (zle slowo - PART) in accidents, THE ones who practice extreme sports and ones who do not do it. For example, when you are 'staying' (mowimy STANDING) on the street, you could be hit by a brick. At that time you could be more wounded than people who have AN accident during 'cultivating' (tutaj potrzeba rzecz- THE CULTIVATION-nawet nie wiem czy to najlepsze slowo) extreme sports.
'Such as man' (nie - tutaj A MAN) who does white water rafting, 'he' (niepotr) must be very 'strength' (to jest sila, a tutaj silNY - STRONG) and have eyes 'around his head' (nie - cos tu nie tak - jest cos jak ...in the back of his head) to avoid 'barrier' (chyba zly wyraz). 'It' (Ale co?) provides 'to' A conclusion that these people in normal life have less accidents.
On the other hand extreme sports 'is' (sports is? czy sports ARE) very riskY and dangerous.
Therefore even magnificent indoctrination and big strength 'could' MAY not
help in tight spot. Consequences of 'nonattention' (dziwne slowo- zmien) in tis type of sport culd be very high, but 'oftenest' (tego slowa nigdy nie slyszalam, chyba nie istnieje-sprawdz) all endS 'on' IN fear.
All in all extreme sports are very riskY but 'major' A LARGE NUMBER OF 'part of' (niepotr) people who practise this have values, which give them 'safe in quagmire' (nie, cos tu nie tak). Therefore THE price of insurance could depend 'from' ON these people too.

Wielkie dzięki za pomoc xD