If you know basic graphic designing then you can use canva to design according to your needs and many templates are also available on canva for free you can edit them. However if you can't design by yourself and want an Ai logo then simply go to chatgpt and give him a detailed prompt of your logo tell him each and everything you want in your logo and if you have any reference image you can also add it with the prompt after completing your prompt ask him to generate a logo it will generate according to your prompt and if you feel that there is anything missing or excess you can use the edit button and ask him to treat it again. You have several free trials and these are enough to get your work done. I also use this trick and I fulfill my many task by this trick its very helpful, useful and time saving.