Win 10 extend volume

Hi all got a problem with an old laptop use to run vista as main os, over time added 8 then 10 upgrade, deleted win vista was slowing system down too much, use as a back up pc to get online as a last resort its slow and old but got me out of some scrapes, (acer 7720G) (like a old fatback tv) any way im left with pic below



the two volumes before ten where one which vista sat on dont need, but can't get ten to merge with them, ten ran out of space to upgrade but i got plenty i cant get it to use, tried all the free options i can think of all want to pay up to merge boot system volume, windows own disk management just has extend grayed out ????

You can't delete or extend System partition this partition is use to boot Windows OS. You can shrink 74 GB System partition this partition must be at least 300 MB. You need to delete F: partition only unallocated storage space can be extended use MiniTool Partition Wizard Free Edition to extend unallocated storage spaces to C: partition.