Bottles is just a GUI to help you set up wine environments without having to deal with wine directly.
For troubleshooting just the lutris forums and wine bugtracker. I mostly play steam games so protondb is the best source of troubleshooting tips.
Tip: Add your non-steam games to steam to launch launch them with Proton. thats probably the easiest way.
Otherwise there’s Bottles and Lutris (and maybe HeroicLauncher)
There is a big push from EU at the moment to reduce “red tape” to make it easier for business, see for example mastodon post from EC a few hours ago: https://ec.social-network.europa.eu/@EUCommission/114280068967975617
FSM in the context of a garage probably means Factory Service Manual, i.e. the service manual for a car or motorbike