1. Use your personal resources to see if anyone in this field needs your trademark;
2, online way, hanging on the trademark trading platform (the handling fee may be higher);
3. Give it to a familiar trademark manager and let him hang it on all major platforms for sale, mainly depending on the value and fate of your trademark;
4. If you really don't want it, you can either not sell it or cancel it (this is a bad idea, it needs to be kept for 10 years and it is more expensive than the agency fee). Not recommended.
The above hope is helpful to the subject.