Too long for a comment:
If I were you I would consider paying for a faster decision on your spouse visa application.
Using the ‘priority service’ means you’ll usually get a decision within 30 working days for Family visa applications from outside the UK. It costs £500 in addition to the application fee.
Using the ‘super priority service’ for visa and settlement applications means you’ll usually get a decision by the end of the next working day. This option costs £1,000 extra.
It can take longer to get a decision, for example, if the Home Office needs to ask you for more information.
If the decision takes longer, you will not usually get your money back.
Note that Canada’s maximum Youth Mobility visa allocation for 2023 was 8,000. I don’t know what the 2024 allocation is, however it seems possible you may qualify for, but not be able to get, a YMV if the allocation has been filled. As to whether applying for a YMV rather than a spouse visa is advisable, since the stakes are high and a refusal might make your future plans harder to achieve, you might want to get advice from a qualified Immigration adviser/lawyer