Maybe check on Godaddy and Sedo and see what .yt domains are being listed for. Check the auctions for asking price and bids. I couldn’t select .yt on Namebio so couldn’t find any sales info. I don’t think .yt carries much value. Your SLDs have some value but television and tv channel are losing relevance, like radio channels vs streaming. I’d liquidate them instead of renewing.
godaddy Valuation tool has television /yt at $534 but I wouldn’t get my hopes up that high.
https://godaddy.com/domain-value-appraisal/appraisal/?checkAvail=1&tmskey=&domainToCheck=Television.yt
GoDaddy has tvchannel /yt valued at $103
https://godaddy.com/domain-value-appraisal/appraisal/?checkAvail=1&tmskey=&domainToCheck=tvchannel.yt
You could list them for sale at those values and see how much traffic I they get. I just think .yt is not that well-known or even easy to buy.