TBH, if you're planning to do your own outreach, start by analysing your competitors' backlink profiles. You'll find plenty of potential websites that are already linking to businesses in your niche.
If you're targeting a specific country or region, look at the leading websites, industry publications, and local blogs in that market. Try reaching out to them with relevant content ideas rather than just asking for a backlink.
Also, check where your competitors are getting links from, identify gaps in your own backlink profile, and prioritise relevant sites that have genuine traffic and are likely to reach your target audience. This gives you a much better starting point than doing random outreach.