i’ve also never heard of google sheets (i think they might be what they use in cheap hotels with laundry problems?)
TradingView is wonderful, IMO
there’s a basic free version, which you can use for ever if you can stand the annoying pop-ups advertising the paid versions
you can also get a month’s free trial of the whole deal (i believe a credit-card may be needed, though: it used to be one of those things where the free trial was on a “book it and cancel if you don’t want it after all” basis)
a better alternative, IMO, is to open a demo account at Oanda and use their “advanced charting” platform - this is exactly the top-of-the-range version of TradingView but under another name, and is completely free with no catches or renewals or credit-card needed - and Oanda demo accounts never expire
(appreciate, though, that TV is a trading platform, not a journaling system)