Lists of internships and career opportunities:
https://github.com/ACM-Alexandria-SC/Internships
https://github.com/deepanshu1422/List-Of-Open-Source-Internships-Programs
https://github.com/anna-yn/career-resources
About research opportunities:
https://github.com/vedantbahel/research
https://github.com/himahuja/Research-Internships-for-Undergraduates
https://github.com/Kavyapriyakp/Research-Internships-for-UG-Students
https://github.com/SouravDutta91/AI-Residency-List
Some GitHub repositories maybe helpful to crack your first internship:
https://github.com/vicky002/TheUltimateInternshipGuide
https://github.com/workattech/get-a-software-engineering-job