How would I code a round based race game similar to Peaspod's Wipeout?

I'm a huge fan of the show Wipeout and I've made various games having to deal with the concept of the show. Right now I want to make a game that is basically a full run of the show. I've wanted to do something like this for a while.

I want to do something similar to this game but more realistic building to the actual show. - https://www.roblox.com/games/288712710/ROBLOX-Wipeout-BETA

I already have the structure of what I plan to have in this game

"Intermission 20...19...18...etc" < Text being displayed

First the simulator will pick a random round 1 out of a folder in ReplicatedStorage called "Qualifier".

"It's time for the Qualifier!"

**"3...2...1..." **Teleports Characters to course

"(Time counting up)" < Round will continue until timer is 5:00 or 300 sec. Or All players finish the round

First round starts out with 20 - 14 people teleported at the start of the course, they will run the course while being timed. The fastest 12 - 8 people will move on to round 2.

The simulator will then pick a random round 2 out of a folder in ReplicatedStorage called "Round 2"

"It's time for Round 2"

Round 2 starts the same, but instead of being timed, it's a race to the finish. First 6 move on to round 3.

"It's time for Round 3"

The simulator will then pick a random round 3 out of a folder in ReplicatedStorage called "Round 3"

"We have reached the Wipeout Zone"

Round 3 is the same as round 2, First 3 or 4 people to make it go to Round 4.

The simulator will then pick a random round 4 out of a folder in ReplicatedStorage called "Wipeout Zone" and set the time to 0

"[Username] has won the game!"

This round is a race to the finish, first one to the end wins. Set time to 12. Reset Process

However, I don't really have an idea of how to actually put my plan into action. I've looked up tutorials on how to make a concept simulator to this, but all the round based games have been more like sword fighting tournaments.

I have some experience with coding and I've attempted to make a minigame place with the basic coding knowledge I have. However it didn't turn out as good as good as I expected and stopped working the more I tinkered with it.

Could someone tell me what I would have to do and the steps I would need in order to make a game like this?