you can use standard library unlike other langauages golang has built in support for db[1], timer to schedule tasks[2], emails[3], templates[4] etc. and your application would be fairly upgrade proof. If you insist on using framework you can use echo or gofiber. There is also pockebase.io it uses echo internally but comes with user management etc. built in.

[1] https://pkg.go.dev/database/sql [2] https://pkg.go.dev/time [3] https://pkg.go.dev/net/smtp [4] https://pkg.go.dev/text/template [3]