Please help us help you and fill where relevant:
LimeSurvey version: 6.10.3
Own server or LimeSurvey Cloud: Own server ionos.com Linux
Survey theme/template: None
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(Write here your question/remark)
I have uploaded all the files via ftp, and point my browser (Chrome) to the installation directory but keep getting an Internal Server Error 500. Is it a file/directory permissions issue?
Any help would be appreciated!

With permission issues I would rather expect an error in the 400 range, not a 500.

www.howtogeek.com/305093/what-is-a-500-i...and-how-do-i-fix-it/

Did you make sure that your server is prepared for running Limesurvey?

www.limesurvey.org/manual/Installation_-...rvey_on_your_website

I will double check that my server is limesurvey ready. Thanks for your help, much appreciated!

The issue has been resolved. I was able to load the installer by going to webitte/limesurvey without appending the admin folder at the end. Thank you for all your help!