I need my WP site fixed, revamped, optimised with existing tools

Looking for a website wizard/ wizardess to fix and revamp my WordPress.com site (https://klwanderlust.com). This site is on a Wordpress business plan, but the recent installation of the Behold Personal blog theme with its plugins has made the site go skewiff! I need this resolved asap and then transferring existing content (7 site pages, 100 mini blog posts) into the frameworks and templates of the new theme and some CSS customization may be required. Yoast SEO update needed for existing pages and posts.

Tools:
Wordpress.com (on Business Plan)
Behold Personal blog theme, templates and plugins + online theme manual
Elementor Pro
Slider Revolution
Yoast SEO

Here's the demo site for the Behold WP theme: https://behold.qodeinteractive.com which shows the design/UX potential in making my site next level.

PS: The fixed price for this project is the MAXIMUM budget and I am looking for the best price, proposal, matching portfolio examples and open communication style for working with me as my site is very precious to me. [I have aleady had a bad experince recently with my site, hence its current condition (https://klwanderlust.com) so i'm very catious right now. The perosn who take this work on will need to understand the KLW brand for this project to work.

Lastly, sucessful competion of this project will gaurentee direct invites for furture work.