You would basically look for a job as you would in France, send your resume, check job offers on websites or go through a temping agency (uitzenbureau in Dutch, travail temporaire or interim in French), etc.
A few resources that might be especially useful for you as a French-speaking expat are:
- leforum.nl, a website for French speakers in the Netherlands. It does include a forum with job postings but last I checked it wasn't very active.
- Undutchables, a recruitment agency focusing on multi-lingual personnel. They mostly have postings for people with specific qualification and more experience than you have, though.
One thing that could be worth trying are call center jobs. There are some call centers covering the Benelux or even France from the Netherlands which might hire French speakers with no other experience.
That said, do realize you face an uphill battle. In spite of widespread perception and commentary, so far the Netherlands has actually done worse than France in the current crisis. I have many friends who speak Dutch and some other languages, have university educations and still struggle to find jobs. Speaking French could be a small advantage but mostly if you also speak Dutch and have relevant work experience, otherwise your options are extremely limited. There are many qualified young people on the market, and more than a few who speak two or three languages.
Furthermore, the Netherlands is really bureaucracy central. The bureaucracy is efficient and generally pleasant to deal with, but still. When I first came here, I needed a BSN (citizen's number, then called a sofi number) and a registered address for everything, which means paying several thousands euros for rent and deposit before getting anything from my employer (and I had a job lined up and assistance from said employer in finding accommodation). Also note than rents are high in the Randstad. Good jobs have salaries to match it but it's definitely more expensive than in most parts of France. France has a bad reputation but I think it's actually easier to get set up quickly than in the Netherlands (at least as an EU citizen).