New Board game advice

Hello everyone, I was told this was the place to ask for Advice. I'm completely new to this, My best friend told me to design a board game and I don't wanna make this a one off project/distraction.

I'm a huge fan of boss battlers, co-op, card games and deck builders so I'm making a Tokusatsu inspired Boss Battler/Deck builder game with an original world filled with lore and hopefully unique experiences.

I'm basically asking for some advice and tips to the Industry. I want this ATM dream game of mine to be a reality but I don't know the steps and where to go etc. Once I'm done playtesting and everything. I have a friend whose a artist, who'd help out as well.

Any advice will be amazing, pls and thank you.