Hello,
Firstly, welcome back to iGP Manager.
With the right methods, you should be able to shift that £152m debt in no time.
Some of the ways to escape debt in iGP are detailed in the following two threads, which I've just edited owing to some recent gameplay updates.
1)
https://igpmanager.com/forum-thread/48203
2)
https://igpmanager.com/forum-thread/41434#226921
Sections 5, 10A and 10B of the
2021 iGP Manager Guide also contain useful information in relation to team finances.
I hope this helps you to get your team's finances back on track.