We looked into applying for EU grants at one point, but didn’t go through with the project in the end.
There were a few consulting companies that we found locally to help us submit the paperwork. That seemed to be the easiest and most likely method of actually getting the money. They could tell us which funds would most likely be available for our project and had a proven record of actually getting projects approved. They also knew which funds were no longer available, even though project proposals were still being accepted. If you decide to work with a company like that, make sure that your contract includes how much their fees will be if your project is approved and if it is not. It could end up costing you a lot of money in consulting fees, even if you don’t receive any money from the EU.
This thread has some links for finding EU grants on your own: