How to get and customise a good consent banner

Hi, I’m trying to create a consent banner in a “Yhdistysavain” web page solution, that gives possibility to insert script -, style -, link - ja meta -tags in the end of head -segment.
I have installed Matomo and it tracks traffic very well. But I haven’t been able to insert consent banner for Matomo. The “Yhdistysavain” web page solution has its own consent banner, but it doesn’t recognise Matomo and it can’t be modified.