One may face challenges like lack of proper direction, motivation, scarcity of resources, recognition by peers, lack of research publishing experience.
In general researchers, especially new researchers, may face challenges at every step starting with the motivation, resources and facilities, time allocated to complete the research, support from more experienced researchers, statistics analysis ( when needed) and publishing the research in a good journal.
I invite you all to follow a "Journal Club" project that I have set in motion to help young researchers and those who need it, on how to write and publish an article, to those who are interested in following the project or if you want to be a collaborator write me and the collaborators icluyo, thank you
Most important five challenges faced by Researchrs are lack of motivation, lack of funds, lack of facilities, poor management and lack of proper guidance etc.