Check out the “Let it Snow” Xmas 2020 Group youtube project!”
Here is a link to a video by Sarah Joy with tips to rid yourself if the screeching cello sound. I am struggling horribly with and have revisited this video for further encouragement.
I wish I could get the smooth soothing cello sound I so dearly strive for, even more than intonation! The screeching disappoints me more than off intonation.
So, here is a link that may help, or at least encourage you to put more effort into it,
Sarah Joy has many cello videos, all of which are escellent.
Cello and Viola Time!