Finding a cloud service is getting confusing.

Alright, I needed a cloud service that had a large free plan for me to use until my financial situation got better. The issue is:

• Filen doesn't allow you to send links until you have a paid plan;
• Nextcloud is... confusing. I can't find a way to do accounts on most clients and stuff.

Can someone give me some hints on Nextcloud or suggest me any other good cloud services?