Implications for leaving family home?

[LocalLockdowner]

I'm going through hell.
H shagging whoever he can from hookup sites and says he does not want to stop.

We own our own house. It's paid off. Roughly valued at 200k.
I have 100k in savings accrued from joint regular saving. It's just in my name for tax reasons being I was a low earner

I am currently unemployed but looking for work. Lost job at start of pandemic. I was a low earner on nmw.
H is self employed but not had any work since Feb thanks to Covid. He has money in his business but we are currently living off savings and his military pension.

Locked down again this week and I just can't do this. I hate him. He is a hoarder etc and house is a tip. I feel suffocated by him and junk. The atmosphere is tense and nasty.

I want to leave, maybe go to a shared house or rent somewhere cheap as I just want my own space.
Ultimately I don't want our house anyway when divorce goes ahead in the long run and even if I did I couldn't afford to run it.

Can I just leave?? Will it impact my claim to a half the house (or whatever split.is agreed) ? Anything I need to know before I escape this toxic hell I'm living in.?

Kids all now at uni, all over 18.

I know I need to see a solicitor but I'm so low I can't see the wood from the trees right now. I'm scared to see a solicitor. I don't know why. Cost maybe? Not understanding What they say??

Can’t see any issues if you don’t want to stay there anyway
Usually it only becomes a problem if you’re suitably housed elsewhere but are trying to argue you need the fmh in order to be housed .....

If you're married the savings will be part of the marital pot.
Start by reading wikivorce and the government website. Borrow some books or buy them from the library. Get your head round how it all works.
Then when you understand the basics pay for an hour with a solicitor to get some good advice. It'll be c£150-200.
Figure out for yourself what would be best case and worst for you. Figure out what would be fair for you both to start afresh on an equal footing. Once you know that from the facts then you can start negotiation.