Save game - Tile based game

Hello, thanks for taking your time to read this.

I am currently working on a tile based strategy game and only now I thought about looking into implementing save game function. I've been looking online for few days now and I see that my options are Serialization or PlayerPrefs, but I just cant get my head around implementing these into my game.

What would be the best approach to save my tile based map and units data? I have the following that i need to save somehow:

-List<Tile> tileList - List of Tile scripts that are each attached to their Tile gameobject(inherit Monobehaviour)

• stores the following: string tileType Vector3 worldCoords Vector3 cubeCoords

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-List<Unit> unitList - List of Unit scripts, again each of those is attached to a gameobject

• stores the following: Tile currentTile string unitType

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I have tried using serialization, but keep running into problems due to my classes inheriting Monobehaviour. With playerprefs, i dont see how I can store the List of scripts and then recreate them.

Many thanks!