Influencers Marketing Platforms

Anyone here had success promoting their products (Shopify or whatever) with influencer marketing platforms such as (Heepsy, Influencity, Intellifluence, etc)? I am willing to promote products using influencers on these platforms so what are the best & trusted influencers platforms you have used and recommend for promoting your products?

I have used Shoutcart 3 times and they were such wastage of money for me each time. I guess I did it completely the wrong way.

I think the best way is to contact the influencers yourself. Most of them also have an email for this in their bio.

Why not try contacting influencers directly on Instagram or tiktok?