i have filled out and been able to edit the boxes for other RSU/ ESPP shares but not for stock i have bought through my own ventures
While I cannot say for certain as I cannot see your tax return, based on the question you posed it may be that the import you made from E-Trade may be interfering somehow with the manual entries you are attempting to make. If the information you entered for your RSU and/or ESPP shows as correct and it is the individual stock transactions that are incorrect or corrupted I suggest deleting the import from E-Trade and, if you have a copy of your 1099-B available, entering the data as single transactions per sales category.
The 1099-B should guide you on what the treatment will be for including the trades on your return. Generally your 1099-B should show the caption for the type of trade that it was - Short-term covered with basis reported to the IRS, Short-term not covered, Long-term covered, Long-term not covered. Each section of the 1099-B needs to be entered separately. You are allowed to combine transactions as one provided they are from the SAME grouping. You enter the transactions in the Investment section of TurboTax as follows:
If you had cryptocurrency as part of your transactions, please follow these steps:
As long as you have deleted the previous import for individual stock transactions the above should solve whatever the issue with your capital transactions is.