Seems its been 6 months since you joined on Fiverr. Keep patience to get orders and As you mentioned you have published 7 gigs, I suggest you don't go with that. If you're just starting out, follow the basic rules,
1> Create only 3 gigs or less than that.
2> Gig should be comply with the specific niche category which mentioned the target audience & service you provide
3> Optimize the gigs descriptions accordingly in a time of interval (*don't edit in a regular basis, at least wait for 1 week or 2 week)
4> Check your gig analytics
5> AFTER getting order from your niche gig then you can move on different category gigs *and most importantly, if choosing a niche category you need to do research a lot or apply niche which you know better. "For BUYER REQUESTS"
You need to send proposal to the buyer which you know better & feels like you can do it.
Find Your USP and make different yourself from others.
mention what you can do to solve buyers issues related to your service.
To be the best version of yourself, keep exploring new ideas, new niche category & problems of customers they are facing.
Follow the consistent process not the idea and goals, not saying that forge about the ideas but keep that in mind and work on the process which help you to get a client who need your solution.
FOLLOW PROCESS IN A CONSISTENT MANNER AND WORK ON ONE SKILL AT A TIME, ONE NICHE AT A TIME.