Learn Swedish: Vi hoppas att de inte kommer att förlora.

We use kommer att for future events that we predict or that are outside of our control (like winning or losing a game). Ska is usually used when someone has an intention or plan to do something. Since they probably do not plan to lose, kommer att is the natural choice.

Why is inte placed before kommer? Shouldn't it be 'kommer inte att'?

This is because att de inte kommer att förlora is a subordinate clause (a sentence part that starts with a connecting word like att and cannot stand on its own). In Swedish subordinate clauses, the negative word inte always comes before the first verb (kommer). A handy trick to remember this is the BIFF rule: Bisats (subordinate clause), Inte Före Finita verbet (Inte before the first verb).

There are two att words in this sentence. Do they do the same thing?

No, they serve different roles. The first att means 'that' and connects the two halves of the sentence: 'We hope that...'. The second att is an infinitive marker (similar to 'to' in English) and belongs to the future phrase kommer att.

Is the word de pronounced exactly as it is spelled here?