Master Lock 265D Door Security Bar, Pack of 1, White https://smile.amazon.com/dp/B0002YUX8I/ref=cm_sw_r_cp_api_i_.Qi-EbGMEGKMV

Something like this would be helpful too. Or this

https://www.amazon.com/DoorJammer-Lockdown-Portable-Protection-DJ4LD/dp/B07HM9HVN4