Hello! 
Experience
As someone who has been working in the gaming and game development industry for 15 years (not here at WeMod, I just lend a hand here when I can) - I can confirm that ~98% of game developers do not care what you do in single player game modes in their games.
My experience in the industry over the years, includes:
- Level design
- Customer support
- Team management
- Senior anti-fraud investigation
- Community Management
To cheat or not to cheat?
In single player games - Cheat, don’t cheat, it’s up to you. You’re only “ruining” the intended experience for yourself.
Heck, some games even have cheats built into them by the developers (Red Dead, Assassin’s Creed, etc). Or they have developer consoles left behind in the public release that can be used for cheating, though that’s not the original purpose of them (Skyrim, Subnautica, etc).
Cheating only becomes a problem in games, to the majority of game devs, when:
- You cheat online in PVP matches, which ruins the experience for other paying customers, not just yourself.
- You cheat online in leaderboard events, especially ones that offer premium/limited in-game or real-life rewards.
- You use cheats, hacks or loopholes to acquire in-game items that normally cost real-life money to acquire.
- This one is also a chargeable crime of theft, though because of the cost of the items vs the cost of dragging you to court, most game devs won’t bother seeking action (beyond hardware banning you) unless the thefts were what they perceive as “excessive”.
- You cheat in esport or similar play-to-earn events that pay out things that have real-world financial value, such as cash or gift cards, by utilising hacks or other loopholes to acquire more/higher prizes than you’re legally eligible for.
- This one is also a chargeable crime, of fraud and theft.
The “other ones”
Of course, I said 98% of game devs don’t care about whether you cheat in single-player game modes. But there are, of course, an extremely small number who do have an issue with it, perhaps most notably the developers of the Forza franchise. But those games won’t have trainers here at WeMod - what’s the point in us making a trainer if you’re just going to get banned from the game for using it?
As far as I am aware, in my time at WeMod (4 years at the time of this post), only two game developers have ever had a problem with single-player cheats.
You have nothing to worry about. The anti-cheat war is focused on online cheaters, not single-player cheaters. Just keep calm and carry on cheating (in single player).