Reported speech isn’t just saying what was said in the past, it’s also about thoughts and agreements in the past. Here are some ‘bets’ that were made in the past. Each bet here was about something happening in the future. This is “future-in-the-past”
I bet that Krasnodar FC will win this weekend. -> Right now I am sure what will happen in the future.
Last week, I bet that Krasnodar would win that weekend. -> In the past I made a bet about a match that also happened in the past.
the verbs ‘went a step back’ because of reported speech
bet -> bet* will -> would
*bet is an irregular verb, and a horrible one — bet / bet / bet
The only way to know if we mean present simple or past simple is through context.
Also the time went a step back this weekend -> that weekend
