How can you play on two forge versions (with two different versions of mods) in Minecraft?

I have the problem that I have Forge 1.7.10 and Forge 1.12.2, Forge 1.7.10 already has 90 mods, but on the other forge there's not, because I have noticed that if I have two different mod versions both forges Do not start and Forge 1.12.2 starts when I've taken out all mods 90, but that's no fun every time I need another version with forge that I first have to pull out all the mods that do not fit and the fit. Is there a solution or do you have to torment yourself with it? Please help me

As an example here is the mod "Aliens-vs-Predator-Mod-1.12.2" and all other mods are from version 1.7.10:

This is the message when I try to forge any of the two forge. To load:

In the launcher create a separate folder for each version, so that the mods are also separated (just as the scores are then also separated…)

Need the two folder mods in the mods folder or in the minecraft folder.

Forge just wants to load the data in the mods folder. Does not work if other versions are. Use launcher that allows you different profiles in different directories, Curse / Twitch for example, then you will not have the problem anymore.

As a standard folder in Minecraft you have the .minecraft folder. You can change this default folder in the profile management and specify your own path. I use, for example C: \ Minecraft \ Version_Pack \ (I just got div 1.7.10er like Sky, etc…). And in the respective folder, a separate mods folder is automatically created when you start the first time. Then put everything in there, which belongs to the version / pack and is good. If you then want to play a new version, or another combination, create a new profile, with its own folder and there again everything to the pack purely. So you have everything cleanly separated…

* EDIT written in wrong field. Should come as a comment…

Thank you

Use a launcher that allows you different profiles in different directories

also goes with the standard launcher… Just as start arguments for better performance, other Java version ect…

I have not used for years because it did not work earlier.